AlgebraEasy–MediumFewest weeks to save a target
Algebra practice question
A student saves $7 a week and wants at least $40 for a concert ticket. What is the fewest number of whole weeks needed?
Answer: 6
7w ≥ 40 gives w ≥ 5.7, so 6 weeks.
Common wrong answers
- If you answered 5
- 5 weeks gives only $35.
- If you answered 280
- 280 multiplies 40 by 7 instead of dividing.
- If you answered 5.7
- 5.7 is the exact quotient, but weeks are whole.
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