Question

govinda had rs.81 in denominations of rs.5 and rs.2 find the number of each denomination. if rs.2 coins is 2 more than rs 5 coins​

Answer 1

Answer:

Rs. 5 coins = 11

Rs. 2 coins = 13

Step-by-step explanation:

let the number of Rs. 5 coins be x

let the number of Rs. 2 coins be y

total amount of both equal to 81

5x + 2y = 81

Rs. 2 coins are two more than Rs. 5 coin

y = x + 2

5x + 2(x + 2) = 81

5x + 2x + 4 = 81

7x = 81 - 4

7x = 77

x = 77/7 = 11

y = x + 2

y = 11 + 2

y = 13

therefore the number of Rs. 5 coins = x = 11

the number of Rs. 2 coins = y = 13

verification

5x + 2y = 81

= 5(11) + 2(13)

= 55 + 26

= 81

hope you get your answer