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Jun 19th, 2015

suppose Arnold had x dimes and y quarters value of x dimes = 10x cents y quarters =25y cents tolal value =10x+25y cents by the problem 10x+ 25y=170..............(1) and x=y+3........................(2) replacing the value of x in (1) we have 10(y+3) + 25y=170 or 10y + 30 + 25y=170 or 35y= 170-30=140 y= 4 x=y+3 x= 4+3 x=7 Arnold had 7 dimes and 4 quarters