Work Rate Flashcards
6 cards from real BARB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Work Rate flashcards as text
A pump fills a tank at 50 litres per minute. The tank holds 1,500 litres. How long to fill it?
Answer: 30 minutes
Time = 1,500 ÷ 50 = 30 minutes.
Soldier A paints 3 rooms per day and Soldier B paints 2 rooms per day. How many days to paint 20 rooms together?
Answer: 4 days
Combined rate = 5 rooms/day; Days = 20 ÷ 5 = 4 days.
A generator produces 200 kW of power per hour. How many hours to produce 1,400 kW?
Answer: 7 hours
Time = 1,400 ÷ 200 = 7 hours.
Two teams together complete a construction task in 6 hours. Team A alone takes 10 hours. How long would Team B take alone?
Answer: 15 hours
Combined rate = 1/6; A's rate = 1/10; B's rate = 1/6 − 1/10 = 5/30 − 3/30 = 2/30 = 1/15; B takes 15 hours.
A soldier sorts 90 documents in 1.5 hours. How many documents per minute is that?
Answer: 1 per minute
90 documents ÷ 90 minutes = 1 document per minute.
What does the BARB Work Rate subtest assess?
Answer: Ability to solve problems involving output, time, and workers
The Work Rate subtest measures your ability to calculate how quickly individuals or teams complete tasks.
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