Problema Solution
Betty has 10 more dimes than quarters, She has 3.45 How many coins does she have?
Answer provided by our tutors
d=10+q.
0.1d+0.25q=3.45.
0.1(10+q)+0.25q=3.45.
1+0.1q+0.25q=3.45.
0.35q=3.45-1.
0.35q=2.45.
q=2.45/0.35
=7.
d=10+q
=17.
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