Question

A purse has only 2 rupee and 5 rupee coins.The sum of the coins is 36 and total values of the coins is rupees 84. Find the number of five rupee coins​

Answer 1

Let x be no. of two rupee coins and y be no. of five rupee coins.

Given that,

x+y=36...(1)

2x+5y=84...(2)

(1)×5⇒ 5x+5y=180 2x+5y=84

3x=180−84

⇒x=60.28

⇒x=32;y=36−32=4

Therefore no. of five rupee coins are 4.

Hope u understand ♥

Answer 2

Answer:

total coins = 36

total value = 84

2 rupee coins = 2x

5 rupee coins = 5x

2x+5x = 84

7x = 84

x = 84/7

x = 12

therefore, 2 rupee coins = 24 rupees

5 rupee coins = 60 rupees

24 + 60 = 84 rupees

5 rupee coins = 12