ICSE Class 10th Mathematics Chapter 7 - Ratio and Proportion Important Questions with Answers

What quantity must be subtracted from each term of the ratio 9 : 17 to make it equal to 1 : 3?

The monthly pocket money of Ravi and Sanjeev are in the ratio 5 : 7. Their expenditures are in the ratio 3 : 5. If each saves Rs. 80 every month, find their monthly pocket money.

The work done by (x – 2) men in (4x + 1) days and the work done by (4x + 1) men in (2x – 3) days are in the ratio 3 : 8. Find the value of x.

The bus fare between two cities is increased in the ratio 7 : 9. Find the increase in the fare, if:

1. the original fare is Rs. 245;
2. the increased fare is Rs. 207.

By increasing the cost of entry ticket to a fair in the ratio 10 : 13, the number of visitors to the fair has decreased in the ratio 6 : 5. In what ratio has the total collection increased or decreased?

In a basket, the ratio between the number of oranges and the number of apples is 7 : 13. If 8 oranges and 11 apples are eaten, the ratio between the number of oranges and the number of apples becomes 1 : 2. Find the original number of oranges and the original number of apples in the basket.

In a mixture of 126 kg of milk and water, milk and water are in ratio 5 : 2. How much water must be added to the mixture to make this ratio 3 : 2?

If A : B = 3 : 4 and B : C = 6 : 7, find:

1. A : B : C
2. A : C

If A : B = 2 : 5 and A : C = 3 : 4, find: A : B : C.

If 3A = 4B = 6C; find: A : B : C.