Problema Solution
Molly has $8.55 in coins. She has three more nickrls than dimes. She has eight fewer quarters than dimes. How many quarters does she have.
Answer provided by our tutors
n=3+d.
0.05n+0.1d=8.55.
0.05*(3+d)+0.1d =8.55
.15+.05d+0.1d=8.55
0.15d=8.55-0.15
0.15d=8.4
d=8.4/0.15
d=56.
n=3+56=59.