A pouch contains 50 Paisa, 25 Paisa and 10 Paisa coins in the ratio 18 : 12 : 10, amounting to ₹130. Find the number of 10 Paisa coins.​

Correct option is C

Given:

The ratio of 50 Paisa, 25 Paisa, and 10 Paisa coins = 18 : 12 : 10

Total amount = ₹130 = 130 × 100 = 13000 Paisa

Solution:

Let the number of 50 Paisa coins be 18x

the number of 25 Paisa coins be 12x,

and the number of 10 Paisa coins be 10x

Now, 

$$(50 \times 18x) + (25 \times 12x) + (10 \times 10x)$$​= 13000

900x + 300x + 100x = 13000

1300x = 13000

x = $$\frac{13000}{1300}$$​ = 10

Now, the number of 10 Paisa coins = 10x = 10 × 10 = 100