Question

in John's piggy bank there is respectively of rs 1 rs 2 and rs five is 5:3:2 in there are total amount rs is 840.find the numbers of every coins

Answer 1

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Answer 2

Let the total coins be X
Hence we have 5x : 3x : 2x .

So the value of the coins is

5x × 1 = 5x
3x × 2 = 6x
2x × 5 = 10x

So the value of the total is 840

So 5x + 6x + 10x = 840
21x = 840
X = 40

Hence there are 
5x = 200 
3x = 120
2x = 80

So 200 one rupee coin , 120 two rupee coin and 80 five rupee coin.