a boy has denominations of ten cents , twenty cents and one dollar coins in the ratio 10:17:7 respectively in his piggy bank
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Let's say, no. Of coins of 10 cents=x
No. Of coins of 20 cents =1.7x
No.if coins of one dollar =0.7x
One dollar is equal to 100 cents i.e., 10 cents =0.1 dollar
0.1*x+0.2*1.7x+1*0.7x= $57
1.14*x=57
X=50
No.of coins of 20 cents = 1.7*x
=1.7*50
=85
Explanation:
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