Mathmetics

ISBT Mathmetics for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

Q341.

Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes, and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge water P, Q and R respectively. What is the proportion of the solution R in the liquid in the tank after 3 minutes ?

1)	3/11	2)	4/11
3)	5/11	4)	6/11
5)	None of these

Q342.

A sum of Rs. 1550 is lent out into two parts, one at 8% and another one at 6%. If the total annual income is Rs. 106, find the money lent at each rate ? (Bank PO, 2005).

1)	Rs. 800	2)	Rs. 850
3)	Rs. 900	4)	Rs. 1000
5)	None of these

Q343.

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: (Bank PO , 2008)

1)	Rs. 400	2)	Rs. 500
3)	Rs. 600	4)	Rs. 800
5)	None of these

Q344.

A sum of money invested at compound interest amounts in 3 years Rs. 2400 and in 4 years to Rs. 2520. The interest rate per annum is -- (Bank PO, 2003)

1)	5%	2)	6%
3)	8%	4)	10%
5)	None of these

Q345.

A sum of money doubles itself at compound interest in 15 years. In how many years will it become eight times ?

1)	30	2)	45
3)	50	4)	60
5)	None of these

Q346.

The Compound interest on a certain sum for 2 years is Rs. 410 and simple interest is Rs. 400. The rate of interest per annum is - (Bank PO, 2007)

1)	3%	2)	4%
3)	5%	4)	6%
5)	None of these

Q347.

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is Re. 1. The sum (in Rs.) is:

1)	625	2)	630
3)	640	4)	650
5)	None of these

Q348.

Twelve men complete a work in 9 days. After they have worked for 6 days, 6 more men join them. How many days will they take to complete the remaining work ?

1)	2 days	2)	3 days
3)	4 days	4)	5 days
5)	None of these

Q349.

A certain number of men can to finish a work in 30 days. If 20 men leave the the work , the work would taken 15 days more. How many men are there originally ?

1)	40	2)	48
3)	50	4)	60
5)	None of these

Q350.

What should be the simple interest obtained on an amount of Rs. 67400 at the rate of 8% p.a. after 3 years ?

1)	Rs. 12380	2)	Rs.16176
3)	Rs.18240	4)	Rs.19020
5)	None of these