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

15 crates/hr

Answer

30 crates/hr

Answer

25 crates/hr

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

6 hours

Answer

4 hours

Answer

3 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

28 kits

Answer

30 kits

Answer

24 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

30 minutes

Answer

45 minutes

Answer

1.5 hours

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

280

Answer

320

Answer

260

Question 6

Which formula correctly expresses work rate when total work (W) and time (T) are known?

Accepted Answer

Rate = W ÷ T

Answer

Rate = W × T

Answer

Rate = T ÷ W

Answer

Rate = W + T