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24-06-2021
Mathematics

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Use the three steps to solve the problem.

Betty has 10 more dimes than quarters. If she has $3.45, how many quarters and dimes does she have?

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24-06-2021

Answer:

17

Step-by-step explanation:

Let d be dimes

q represent quarters

d = q + 10

10d + 25q = 345 cents

Substitute for "d" and solve for "q";

10(q+10) + 25q = 345

35q + 100 = 345

35q = 245

q = 7

Since d = q+10, d = 17

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