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A tap fills 12 litres in 4 minutes at a constant rate. How long will it take to fill 30 litres?

Correct answer: C. 10 minutes

  • A. 8 minutes
  • B. 9 minutes
  • C. 10 minutes
  • D. 12 minutes

Explanation

The tap fills 12 divided by 4, or 3 litres per minute. Filling 30 litres therefore takes 30 divided by 3, which is 10 minutes.

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About Quantitative Reasoning

Quantitative reasoning applies arithmetic and basic algebra to numerical relationships, including percentages, ratios, averages, fractions, proportions, profit and loss, rates, time, work and measurement. Questions focus on translating words into equations, choosing an efficient method and checking whether the result is numerically reasonable.

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