BARB Distance Speed and Time 3

Question 1

A soldier walks 5 km at 4 km/h, then runs 10 km at 10 km/h. What is the total journey time?

Accepted Answer

2 hours 15 min

Answer

Walking: 5 ÷ 4 = 1.25 hrs; Running: 10 ÷ 10 = 1 hr; Total = 2.25 hrs = 2 hours 15 min.

Question 2

Vehicle A leaves at 09:00 travelling at 60 km/h. Vehicle B leaves the same point at 10:00 travelling at 90 km/h in the same direction. When does B catch A?

Accepted Answer

12:00

Answer

A has a 60 km head start; relative speed = 30 km/h; Time to catch = 60 ÷ 30 = 2 hrs after B departs = 12:00.

Question 3

A drone covers 450 km at 150 km/h. How long is the flight?

Accepted Answer

3 hours

Answer

Time = 450 ÷ 150 = 3 hours.

Question 4

A convoy averages 40 km/h for the first 2 hours and 60 km/h for the next 3 hours. What is the total distance?

Accepted Answer

220 km

Answer

First leg: 40 × 2 = 80 km; Second leg: 60 × 3 = 180 km; Total = 260 km.

Question 5

A soldier must cover 100 km. He cycles the first 40 km at 20 km/h and drives the remaining 60 km at 60 km/h. What is the total time?

Accepted Answer

2 hours

Answer

Cycling: 40 ÷ 20 = 2 hrs; Driving: 60 ÷ 60 = 1 hr; Total = 3 hours.

BARB - British Army Recruit Battery Practice Test

BARB - British Army Recruit Battery Practice Test

BARB Distance Speed and Time 3