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.
Last updated
About Ratio and Proportion
Ratios compare quantities in the same units, while proportions state that two ratios are equal. Problems cover simplification, division in a given ratio, direct and inverse variation, scale, and missing terms, with attention to the difference between a ratio and a fraction representing part of a whole.
Practise Arithmetic
1,060 free Arithmetic MCQs from Mathematics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Mathematics questions like this
Mathematics is on 67 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.