alleryStart learning →Maria has $2.43 in quarters and pennies, with twice as many pennies as quarters. How many quarters does she have?
A18 quarters
B9 quarters
C27 quarters
D4 quarters
Answer & Solution
Correct answer: B. 9 quarters
1. Let q equal the number of quarters, so the number of pennies is 2q.
2. The total value equation is 0.25q plus 0.01(2q) equals 2.43.
3. Combine like terms: 0.27q equals 2.43.
4. Divide by 0.27 to get q equals 9 quarters.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 3 "Math Models", section 3.3 Solve Mixture Applications_
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