Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by whitelisting our website.

Time and Work Mcqs

Twelve children take sixteen days to complete a work which can be completed by 8 adults in 12 days. After working for 3 days, sixteen adults left and six adults and four children joined them. How many days will they take to complete the remaining work ?

Mathematics Mcqs, Time and Work Mcqs /
Twelve children take sixteen days to complete a work which can be completed by 8 adults in 12 days. After working for 3 days, sixteen adults left and six adults and four children joined them. How many days will they take to complete the remaining work ?

A. 3 days
B. 4 days
C. 6 days
D. 8 days

Solution:
12×16×C=12×8×A
Or, A:C=2:1 [Efficiency ratio]
Let, Required time be T days
Applying MDH Method:
12×8×2=16×2×3+(6×2+4×1)×T
Or, 192=96+14T
Or, T=6
Answer:6 days

Twelve children take sixteen days to complete a work which can be completed by 8 adults in 12 days. After working for 3 days, sixteen adults left and six adults and four children joined them. How many days will they take to complete the remaining work ? Read More »

Mathematics Mcqs, Time and Work Mcqs

P and Q can complete a work in 15 days and 10 days respectively. They started the work together and then Q left after 2 days. P alone completed the remaining work. The work was finished in__________days.

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs /
P and Q can complete a work in 15 days and 10 days respectively. They started the work together and then Q left after 2 days. P alone completed the remaining work. The work was finished in__________days.

A. 12
B. 15
C. 22
D. 20
Work done by P in 1 day = 1/15
Work done by Q in 1 day = 1/10
Work done by P and Q in 1 day = 1/15 + 1/10 = 1/6
Work done by P and Q in 2 days = 2 × (1/6) = 1/3
Remaining work = 1 – 1/3 = 2/3
Time taken by P to complete the remaining work 2/3 = (2/3) / (1/15) = 10 days
Total time taken = 2 + 10 = 12 days

P and Q can complete a work in 15 days and 10 days respectively. They started the work together and then Q left after 2 days. P alone completed the remaining work. The work was finished in__________days. Read More »

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs

A and B can finish a work 30 days if they work together. They worked together for 20 days and then B left. A finished the remaining work in another 20 days. In how many days A alone can finish the work?

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs /
A and B can finish a work 30 days if they work together. They worked together for 20 days and then B left. A finished the remaining work in another 20 days. In how many days A alone can finish the work?

A. 70
B. 50
C. 40
D. 60
Amount of work done by A and B in 1 day = 1/30
Amount of work done by A and B in 20 days = 20 × (1/30) = 20/30 = 2/3
Remaining work – 1 – 2/3 = 1/3
A completes 1/3 work in 20 days
Amount of work A can do in 1 day = (1/3)/20 = 1/60
=> A can complete the work in 60 days

A and B can finish a work 30 days if they work together. They worked together for 20 days and then B left. A finished the remaining work in another 20 days. In how many days A alone can finish the work? Read More »

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs

A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in___________days if they work together.

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs /
A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in___________days if they work together.

A. 18 days
B. 22 ½ days
C. 24 days
D. 26 days
If A completes a work in 1 day, B completes the same work in 3 days
Hence, if the difference is 2 days, B can complete the work in 3 days
=> if the difference is 60 days, B can complete the work in 90 days
=> Amount of work B can do in 1 day= 1/90
Amount of work A can do in 1 day = 3 × (1/90) = 1/30
Amount of work A and B can together do in 1 day = 1/90 + 1/30 = 4/90 = 2/45
=> A and B together can do the work in 45/2 days = 22 ½ days

A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in___________days if they work together. Read More »

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs

Two taps X and Y can fill a tank in 10 hrs. and 15 hrs.respectively.  If the both taps are opened together, the tank will be full in_________?

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs /
Two taps X and Y can fill a tank in 10 hrs. and 15 hrs.respectively.  If the both taps are opened together, the tank will be full in_________?

A. 3 hrs.
B. 4 hrs,
C. 5 hrs.
D. 6 hrs.
X’s 1 hour work = 1/10
Y’s 1 hour work = 1/15
(x+y)’s 1 hour work = 1/10+1/15=5/30=1/6
Both the taps can fill the tank in 6 hrs.

Two taps X and Y can fill a tank in 10 hrs. and 15 hrs.respectively.  If the both taps are opened together, the tank will be full in_________? Read More »

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs

A, B and C together earn Rs.150 per day while A and C together earn Rs.94 and B and C together earn Rs.76. The daily earning of C is:__________?

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs /
A, B and C together earn Rs.150 per day while A and C together earn Rs.94 and B and C together earn Rs.76. The daily earning of C is:__________?

A. 10 Rs,
B. 15 Rs,
C. 20 Rs.
D. 25 Rs.
B’s daily earning = Rs.(150-94)= Rs.56
A’s daily earning = Rs.(150-76)= Rs.74
C’s daily earning = Rs.[(150-(56+74)]=Rs.20

A, B and C together earn Rs.150 per day while A and C together earn Rs.94 and B and C together earn Rs.76. The daily earning of C is:__________? Read More »

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs

If 3 men or 4 women can construct a wall in 43 days, then the number of days that 7 men and 5 women take to construct it is :

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs /
If 3 men or 4 women can construct a wall in 43 days, then the number of days that 7 men and 5 women take to construct it is :

A. 12 days
B. 14 days
C. 16 days
D. 18 days

If 3 men or 4 women can construct a wall in 43 days, then the number of days that 7 men and 5 women take to construct it is : Read More »

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs

If 6 men can make 10 sofas in 2 days, then 8 men can make 8 sofas in__________?

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs /
If 6 men can make 10 sofas in 2 days, then 8 men can make 8 sofas in__________?

A. 1.8 days
B. 1.5 days
C. 1.2 days
D. 1 day
Time is
directly proportional to number of sofas
inversely proportional to number of people No. of days
= (6/8)*(8/10)*2
= 1.2 days

If 6 men can make 10 sofas in 2 days, then 8 men can make 8 sofas in__________? Read More »

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs

If 10 workers can make 10 tables in 10 days, then how many days would it take for 5 workers to make 5 tables?

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs /
If 10 workers can make 10 tables in 10 days, then how many days would it take for 5 workers to make 5 tables?

A. 1
B. 5
C. 10
D. 25
10 workers make 10 tables in 10 days. 1 worker makes 1 table in 10 days. Similarly, 5 workers can make 5 tables in 10 days.

If 10 workers can make 10 tables in 10 days, then how many days would it take for 5 workers to make 5 tables? Read More »

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs

If 6 men take 9 days to complete a work, how many men can complete the work in 3 days?

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs /
If 6 men take 9 days to complete a work, how many men can complete the work in 3 days?

A. 2 men
B. 12 men
C. 9 men
D. 18 men
For the work to be completed in 9 days,
6 men are required. Time and men are inversely proportional. For the work to be completed in 3 days,
6*9/3 = 18 men are required

If 6 men take 9 days to complete a work, how many men can complete the work in 3 days? Read More »

Basic Maths Mcqs, Mathematics Mcqs, Time and Work Mcqs