Question

a bag contains 1 rs, 2 rs, and 5 rs coins in the ratio of 5:9:7 amounting to 129 rs. find the number of coins of each type.

Answer 1

Let no of Rs1 coins=5x Value=1*5x=Rs5x
Rs2 coins=9x Value=2*9x=Rs18x
Rs5 coins=7x Value=5*7x=Rs35x
Now, 5x+18x+35x=129
58x=129
This problem has no soln
If x=2,total value=5*2+18*2+35*2
=10+36+70=116
If x=3,total value=5*3+18*3+35*3
=15+54+105=174