#### Question

A bag contains Rs 1800 in the form of Rs 1 , Rs 2 and Rs 5 ooins. The ratio of the number of the respective coins is 3: 7: 11. Find the total number of ooi ns in the bag.

#### Solution

Let the number of Re 1, Rs 2 and Rs 5 coins be 3x, 7x and 11x

The sum of their value =

3x+ (2 × 7x) + (5 × 11x) = Rs 1800

3x + 14x + 55x = 1800

72x = 1800

x = 25

3x =3 × 25 = 75

7x = 7 × 25 = 175

11 x = 11 x 25 = 275

total = 75 + 175 + 275 = 525

Total number of coins = 525

Is there an error in this question or solution?

Solution A Bag Contains Rs 1800 in the Form of Re 1 , Rs 2 and Rs 5 Ooins. the Ratio of the Number of the Respective Ooi Ns is 3: 7: 11. Concept: Ratio and Proportion Example.