BARB Work Rate

Question 1

Soldier A can pack 60 supply crates in 3 hours. What is his rate per hour?

Accepted Answer

20 crates/hr

Answer

Rate = 60 ÷ 3 = 20 crates per hour.

Question 2

Two soldiers together dig a trench at a combined rate of 4 metres per hour. How long to dig 20 metres?

Accepted Answer

5 hours

Answer

Time = 20 ÷ 4 = 5 hours.

Question 3

Recruit X assembles 5 kits per hour and Recruit Y assembles 3 kits per hour. How many kits do they assemble together in 4 hours?

Accepted Answer

32 kits

Answer

Combined rate = 8 kits/hr; Total = 8 × 4 = 32 kits.

Question 4

A team of 4 soldiers loads a truck in 2 hours. How long would it take 8 soldiers working at the same rate?

Accepted Answer

1 hour

Answer

Doubling the workforce halves the time: 2 ÷ 2 = 1 hour.

Question 5

One machine fills 120 sandbags in 6 hours. A second machine fills 180 sandbags in 6 hours. How many sandbags do both machines fill together in 6 hours?

Accepted Answer

300

Answer

120 + 180 = 300 sandbags in 6 hours.

BARB - British Army Recruit Battery Practice Test

BARB - British Army Recruit Battery Practice Test

BARB Work Rate