Question

I got 16 numbers of one rupee and 50 paise coins from a shop in exchange for Rs.10 ,then how many number of 1 rupee coin I get?​

Answer 1

Answer:

4

Step-by-step explanation:

Let x be the number of 1 rupee coins

50 paise coins = 16 - x

Total value of 1 rupee and 50 paise (i.e. 1/2 rupee) coins should be equal to Rs.10.

Thus,

x * 1 + (16 - x)1/2 = 10

x + 8 - x/2 = 10

x/2 = 10 - 8 => x/2 = 2 => x = 4.

The number of 1 rupee coins = 4.

Number 50 paise coins = 12