1.

There are Rs. 2 and 5 rs. coins in a purse. if there are 60 coins of value Rs. 195,find the number of coins of each kind

Answer»

2x+5y= 195. 1
x+y=60
2x+2y=120
-2x-2y=-120. 2

adding 1 and 2

3x=315
x=105
y=15



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