Question

a box contains only rupees 2 and rupees 5coins.If total number of the coins is 80 and total amount in the box is rupees 304,find number of rupees 2 coins and number of rupees 5 coins.​

Answer 1

Answer:

coin of Rs 2 = 32

coin of Rs 5 = 48

Explanation:

total amount = Rs 304

total coins = 80

let the number of Rs 5 coin = x

then the number of Rs 2 coin = 80 - x

2(80 - x) + 5x = 304

160 - 2x + 5x = 304

160 + 3x = 304

3x = 304 - 160

3x = 144

x = 144/3

x = 48

coin of Rs 5 = x = 48

coin of Rs 2 = 80 - x =80 - 48 = 32