Quiz on Reasoning – Ratio

1. A father distributed some chocolates among his four children and kept some with him. The eldest three children got chocolates in the ratio 3 : 11 : 7. The total number of chocolates with father and youngest child is three times the total chocolates with the three eldest children. The ratio of chocolates with father and that with all the children is 3 : 4. Find the total number of chocolates if the youngest child has 81 chocolates with him?

2. The ratio of salary of A and B is 5 : 7 and that of B and C is 3 : 5. The salary of A is Rs. 165000 and C spends 28.56% of his salary on rent. How much money is left with C after expenditure on rent?

3. The ratio of zinc and copper in a brass pieces is 13 : 7. How much zinc will be there in 100 kg of such a piece?

4. In a certain school, the ratio of boys to girls is 7 : 5. If there are 2400 students in the school, then how many girls are there?

5. What must be added to each term of the ratio 2 : 5 so that it may equal to 5 : 6 ?

6. What is the fourth proportional to 3, 7, 15.

7. What must be added to each term of the ratio 49 : 68 so that it becomes 3 : 4?

8. 0.5 of a number is equal to 0.07 of another. The ratio of the numbers is:

9. A bag contains certain number of coins of different denominations. The ratio of the number of Re. 1 coins to Rs. 2 coins is 5 : 7, respectively and the ratio of number of Rs. 2 coins to Rs. 5 coins is 7 : 6 respectively. Find the total value of the Rs. 5 coins, if the total value of the Rs. 1 coins in the bag is Rs. 15. 

10. The ratio of number of men and women in a factory of 720 workers is 7 : 5. How many more women should be joined to make the ratio 1 : 1?