Quantitative an...

The difference between compound interest and simple interest at the same rate for Rs. 5000 for 2 years is Rs. 72. The rate of interest per annum is

Milk and water are mixed in the ratio 4 : 1 to form solution A and in the ratio 3 : 2 to form solution B. A man takes equal quantities of solutions A and B and mixes them together. What is the ratio of quantities of milk to that of water in the mixture so formed?

The average age of a couple was 26 years at the time of their marriage. After 11 years of marriage, the average age of the family, with 3 children, becomes 19 years. What is the average age of each child?

100 men are to sit in a room, which is 25 m long and 9.8 m wide. If a man needs 12.25 cubic metres of air space, then the minimum height of the room should be

Six examiners, working 5 hours a day, can check 750 answer books in 8 days. At the same rate of checking, in what period of time can 4 examiners examine 800 answer books by working 8 hours a day?

In a bag, there are coins of 20 paise, 25 paise and 50 paise in the ratio 5 : 4 : 2. If the total amount in the bag is Rs. 24, then how many 20 paise coins does the bag contain?

The floor of the rectangular room of size 10 m (length) x 8.5 m (width) x 8.5 m (height) is to be carpeted, so as to leave a margin of 1.25 m from all sides. What would be the area of the carpet required?

A trader mixes two varieties of tea costing Rs. 40 per kg and Rs.50 per kg in the ratio 5 : 4. If the mixture is sold at Rs. 48 per kg, then what is the gain percentage?

Which of the following numbers cannot come at the units digit of a perfect cube?

Two poles of height 35 m and 20 m stand on a plane surface. If the distance between their feet is 20 m, then what is the distance between their tops?