Question

a woman has $1.70 in dimes and nickels.She has 5 more dimes than nickles. How many nickles does she have

Answer 1

d=5+n
0.1(5+n)+0.05n=1.7
0.5+0.15n=1.7
0.15n=1.2
n=8
d=13
therefore 8 nickles and 13 dimes.