Question

A bag contain 1-rupee, 50-paisa and 25-paisa coins in the ratio 5:6:7. if the total amount is rs.780, find the number of coins of each kind.

Answer 1

5x+6x+7x=18x
/5x*780=¿
....

Answer 2

Solution

Ratio of value of the coins 5/1 : 6/2 : 7/4 = 20:12:7

Value of 1 rupee coins = Rs.(780*20/39) = Rs.400

Value of 50-paise coins = Rs.(780*12/39) = Rs.240

Value of 20-paise coins = Rs.(780*7/39) = Rs.140

Therefore,

Number of 1 Rupee coins = 400

Number of 50-paise coins = 240*2 = 480

Number of 25-paise coins = 140*4 = 560

✔️Answer: 400, 480, 560