Compound Interest | Mathematics Mcqs

The difference between the compound interest compounded annually and simple interest for 2 years at 20% per annum is Rs.144. Find the principal?

Byadmin September 23, 2019July 26, 2021

The difference between the compound interest compounded annually and simple interest for 2 years at 20% per annum is Rs.144. Find the principal?

A. Rs.3000
B. Rs.3300
C. Rs.3600
D. Rs.3900

Height and Distance Mcqs | Mathematics Mcqs

The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is :_________?

The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is :_________?

A. 2.3 m
B. 4.6 m
C. 7.8 m
D. 9.2 m
Let AB be the wall and BC be the ladder. Then, ∠ACB = 60° and AC = 4.6 m. AC/BC = Cos 60° = 1/2 BC = 2 X AC = (2 X 4.6) m = 9.2 m.

Read More The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is :_________?
Compound Interest | Mathematics Mcqs

A man gets a simple interest of Rs.500 on a certain principal at the rate of 5% p.a in two years. Find the compound interest the man will get on twice the principal in two years at the same rate.

A man gets a simple interest of Rs.500 on a certain principal at the rate of 5% p.a in two years. Find the compound interest the man will get on twice the principal in two years at the same rate.

A. Rs.500
B. Rs.250
C. Rs.5012.50
D. Rs.5062.50
E. None of these.
Explanation:
Let the principal be Rs.P
S.I at 5% p.a in 8 years on Rs.P = Rs.500
(P)(8)(5)/100 = 500
P = 1250
C.I on Rs.2P i.e., Rs.2500 at 5% p.a in two years
=2500{ [1 + 5/100]2 – 1} = 2500{ 212 – 202 /202}
= 2500/400(441 – 400)
= 25/4(41) = 1025/4 = Rs.256.25

Read More A man gets a simple interest of Rs.500 on a certain principal at the rate of 5% p.a in two years. Find the compound interest the man will get on twice the principal in two years at the same rate.
Aptitude | Compound Interest

The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The simple interest on the same sum for double the time at half the rate percent per annum is:

Question:
The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The simple interest on the same sum for double the time at half the rate percent per annum is:

[A].

Rs. 400
[B].
Rs. 500
[C].
Rs. 600
[D].
Rs. 800

Answer: Option B

Explanation:

Let the sum be Rs. P.

Then, P 1 + 10 2 – P = 525

100

P 11 2 – 1 = 525

10

P = 525 x 100 = 2500.

21

Sum = Rs . 2500.

So, S.I. = Rs. 2500 x 5 x 4 = Rs. 500

100

Read More The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The simple interest on the same sum for double the time at half the rate percent per annum is:
Mathematics Mcqs | Problems on Numbers

The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is :___________?

The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is :___________?

A. 20
B. 30
C. 40
D. None of these

Read More The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is :___________?
Basic Maths Mcqs | Mathematics Mcqs | Time and Work Mcqs

P and Q can complete a work in 20 days and 12 days respectively. P alone started the work and Q joined him after 4 days till the completion of the work. How long did the work last?

P and Q can complete a work in 20 days and 12 days respectively. P alone started the work and Q joined him after 4 days till the completion of the work. How long did the work last?

A. 5 days
B. 10 days
C. 15 days
D. 12 days
Work done by P in 1 day = 1/20
Work done by Q in 1 day = 1/12
Work done by P in 4 days = 4 × (1/20) = 1/5
Remaining work = 1 – 1/5 = 4/5
Work done by P and Q in 1 day = 1/20 + 1/12 = 8/60 = 2/15
Number of days P and Q take to complete the remaining work = (4/5) / (2/15) = 6
Total days = 4 + 6 = 10

Read More P and Q can complete a work in 20 days and 12 days respectively. P alone started the work and Q joined him after 4 days till the completion of the work. How long did the work last?
Mathematics Mcqs | Men Food Mcqs

In a ship the provisions are sufficient for 800 men for 50 days. How long will these be sufficient for if there would have been 200 more men?

In a ship the provisions are sufficient for 800 men for 50 days. How long will these be sufficient for if there would have been 200 more men?

A. 40
B. 50
C. 30
D. 56

Read More In a ship the provisions are sufficient for 800 men for 50 days. How long will these be sufficient for if there would have been 200 more men?