I have a total of 300 in coins of denomination

Asked by admin @ 04/08/2021 in Math viewed by 258 People

I have a total of Rs300 in coins of denomination Rs 1, Rs 2 and Rs 5 . The number of Rs 2 coins is 3 times the number of Rs 5 coins . The total number of coins is 160 . How many coins of each denomination are with me?

Answered by admin @ 04/08/2021

Let the number of coin 5 = Rs.x
so the number of coin 2 = 3x
so the number of coin 1 = 160 - 4x

so amount of rs.5 = 5x
so the amount of rs.2 = 6x

a/q

5x + 6x + 160 - 4x = 300
7x = 300 - 160
7x = 140
x = 20

so the number of coin of 5 = 20 coins
so the number of coin of 2 = 60 coins
so the number of coin of 1 = 80 coins

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