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There are 10 pipes connected to a tank. Some of them are inlet pipes and some of them are outlet pipes. Each inlet pipe can fill the tank in 15 hours and while each outlet pipe can empty the tank in 30 hours. Find the number of outlet pipes if it took 15 hours to fill the tank if all are opened?

The CI on a certain sum for 2 years is Rs. 1512 and SI is Rs.1440. If the sum is invested such that the SI is Rs. 1800 and the number of years is equal to the rate of interest per annum, then find the rate?

Correct

Answer – 2) 5%
Explanation:
SI for first year = Rs.720
CI-SI = 72
Therefore Interest on Rs.720 for 1 year =Rs.72
then R =10%
1440 = (P*2*10)/100
P =7200
7200*R*R/100 =1800
R =5

Incorrect

Answer – 2) 5%
Explanation:
SI for first year = Rs.720
CI-SI = 72
Therefore Interest on Rs.720 for 1 year =Rs.72
then R =10%
1440 = (P*2*10)/100
P =7200
7200*R*R/100 =1800
R =5

Question 9 of 10

9. Question

1 points

Category: Quantitative Aptitude

A shopkeeper sold a watch and got Rs 300 as profit. Find the profit percentage.
I) Selling price of the watch is Rs 1200
II) He gave 25% discount, which is Rs 400, on the labeled price
III) Cost price of the watch is Rs 900.

Correct

Answer – 2) Any of the three

Incorrect

Answer – 2) Any of the three

Question 10 of 10

10. Question

1 points

Category: Quantitative Aptitude

Five years ago, Amit’s age was three times that of Bharat. Ten years ago, Amit’s age was half that of Chand. Chand’s present age is 36 years.
Quantity I : Bharat’s present age
Quantity II : Difference between Chand’s age and Amit’s age

Correct

Answer – 2) Quantity I < Quantity II
Explanation:
Amit’s present age = (36-10)/2 + 10 =23
Bharat’s present age = (23-5)/2 + 5 = 11
Difference between Chand’s age & Amit’s age =36-23=13

Incorrect

Answer – 2) Quantity I < Quantity II
Explanation:
Amit’s present age = (36-10)/2 + 10 =23
Bharat’s present age = (23-5)/2 + 5 = 11
Difference between Chand’s age & Amit’s age =36-23=13

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