A student can solve q questions in 1/h hour. At this rate how many questions can she solve in q hours?
Correct answer: B. hq2
- A. hq
- B. hq2
- C. 1/hq
- D. h/q
Explanation
Solving q questions in 1/h hour gives a rate of q questions / (1/h hour) = hq questions per hour. In q hours, the number solved is hq questions/hour x q hours = hq² questions. Students may choose hq by forgetting to multiply the hourly rate by the full q-hour duration.
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