If the ratio of the areas of two squares is 9:1 ratio of their perimeters is_________?
If the ratio of the areas of two squares is 9:1 ratio of their perimeters is_________?
A. 9:1
B. 3:1
C. 3:4
D. 1:3
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A man purchased a watch for Rs. 400 and sold it at a gain of 20% of the selling price. The selling price of the watch is:__________?
A man purchased a watch for Rs. 400 and sold it at a gain of 20% of the selling price. The selling price of the watch is:__________?A. Rs. 300
B. Rs. 320
C. Rs. 440
D. Rs. 500
Explanation:
Let S.P = Rs. X
Then, 400 + 20% of x = x
(Or) 400 + X/5 = X
(Or) 4X/5 = 400
(or) x = 400 × 5/4 = 500
S.P = Rs. 500The average age of M boys is ‘b’ years and of ‘n’ girls ‘c’ years. The average age of all together is_________?
The average age of M boys is ‘b’ years and of ‘n’ girls ‘c’ years. The average age of all together is_________?A. (mb – nc)/ (m + n) years
B. (mb + nc)/ (m – n) years
C. (mb + nc)/ (m + n) years
D. (mb – nc)/ (m – n) yearsA cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in?
A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in?A. 16 hrs
B. 20 hrs
C. 40 hrs
D. 25 hrs
Explanation:
1/8 – 1/x = 1/10
x = 40A boat running downstream covers 24 km’s in 4 hours while for covering the same distance upstream it takes 6 hours whats the speed of the boat in still water?
A boat running downstream covers 24 km’s in 4 hours while for covering the same distance upstream it takes 6 hours whats the speed of the boat in still water?A. 3.5km/hr
B. 5.5 km/hr
C. 6 km/hr
D. Data Inadequate
E. None of these
Explanation:
Speed downstream = 24/4 km/hr = 6 km/hr
Speed upstream = 24/6 km/hr = 4 km/hr
Speed of the boat in still water = ½ (6 +4)km/hr = 5 km/hrIf 10 workers can make 10 tables in 10 days, then how many days would it take for 5 workers to make 5 tables?
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.One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill tank in 36 min, then the slower pipe alone will be able to fill the tank in?
One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill tank in 36 min, then the slower pipe alone will be able to fill the tank in?A. 81 min
B. 108 min
C. 144 min
D. 192 min
Explanation:
Let the slower pipe alone fill the tank in x min.
Then, faster pipe will fill it in x/3 min.
1/x + 3/x = 1/36
4/x = 1/36 => x = 144 min.