Railway RRB 2016: Quant Test – Day 9

A 80 litres solution of milk and water contains 80% milk. 10 litres of this mixture is replaced by 10 litres of milk. What is the percentage of water in the final mixture?

A sum of money is lent for 2 years at 20% p.a. compound interest. It yields Rs 43.38 more when compounded semi-annually than compounded annually. What is the approximate sum lent?

80% of 120 added to 60% of a number is number itself. Find the number.

Four years ago, ratio of ages of Arun and Tarun was 9 : 11. 6 years hence the ratio will be 7 : 8 respectively. Find the sum of the present ages of the two.

50 people start a work working 8 hours each day. After 10 days it was found that only 2/5th of the work was done. How many additional people need to be employed in order to complete the remaining work in 5 days working same number of hours each day?

There is a loss of 40% on an article when it is sold at 3/4th the previous selling price. What is the actual profit/loss% on it?

There are three pipes A, B and C such that A and B can fill the tank in 20 min. and 30 min. respectively and C can empty it in 24 min. all are opened and after 6 minutes pipe C is closed. In how many minutes the tank will get full?

Rs 2210 is lent in two parts, one part at 7% for 4 years and remaining part at 8% for 5 years. After the respective times, the interest received from both parts is same. Find the amount lend at 8%.

There are 4 men and 6 women. In how many ways a group of 5 people can be made containing at least 3 women?

A man can row 8 km/hr in still water. When the river is running at 4 km/hr, it takes him 4 hrs to row to a place and come back. How far is the place?