Question

if a person has only two rupees and five rupees coins the sum of the coins is 36 and the total value of the coins is 84 rupees find the number of 5 rupee coins​

Answer 1

Answer:

4

Step-by-step explanation:

2 rupee coin-- x

5 rupee coin-- 36-x

2x +5(36-x) is 84

2x+180-5x Is 84

-3x is -96

X is 32

So 36-x is 4

Answer 2

Answer:

4 5-rupee coins

Step-by-step explanation:

2x+5y=84

X+y=36

by solving

2x+5y=84

-2x-2y=-72

__________

3y=12

y=4