A pump fills a tank of capacity 360 litres in 12 minutes when working alone. A second pump fills the same tank in 20 minutes when working alone. If both pumps work together, how long will it take to fill the tank?
FREE QUIZ · PRIMARY 5 MATHEMATICS
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Five MCQs on Rate. Pick an answer, see the specific misconception. The diagnosis comes after the score.
A car uses 6 litres of petrol every 40 km. How many litres does it use to travel 100 km, at the same rate?
Tap A fills a tank in 10 minutes. Tap B drains the same tank in 15 minutes. If the tank starts empty and BOTH taps are turned on at the same time, how long does it take to fill the tank?
A printer prints 420 pages in 7 minutes. At the same rate, how many pages can it print in 15 minutes?
A printer prints 36 pages every 4 minutes at a constant rate. At this rate, how many pages will the printer print in 1 hour and 15 minutes?