DAA Distance, Speed, and Time Problems 3

Question 1

A car travels the first half of a journey at 60 km/h and the second half at 90 km/h. What is the average speed for the entire journey?

Accepted Answer

72 km/h

Answer

70 km/h

Answer

74 km/h

Answer

75 km/h

Question 2

A man rows downstream at 12 km/h and upstream at 6 km/h. What is the speed of the current?

Accepted Answer

3 km/h

Answer

2 km/h

Answer

4 km/h

Answer

6 km/h

Question 3

A person travels 40 km in 4 hours on day one and 60 km in 6 hours on day two. What is the average speed over both days combined?

Accepted Answer

10 km/h

Answer

8 km/h

Answer

9 km/h

Answer

12 km/h

Question 4

Two cyclists start from opposite ends of a 120 km road at the same time. Cyclist A rides at 20 km/h and Cyclist B at 25 km/h. After how long will they meet?

Accepted Answer

2 hours 40 minutes

Answer

2 hours

Answer

2 hours 20 minutes

Answer

3 hours

Question 5

A boat's speed in still water is 15 km/h and the river current flows at 3 km/h. How long will it take the boat to travel 108 km downstream?

Accepted Answer

6 hours

Answer

5 hours

Answer

7 hours

Answer

8 hours

Question 6

A military vehicle travels at 80 km/h for 2 hours, then at 60 km/h for 3 hours. What is the total distance covered?

Accepted Answer

340 km

Answer

260 km

Answer

300 km

Answer

320 km

Question 7

A reconnaissance plane flies from base to a target at 600 km/h and returns at 400 km/h. What is the average speed for the round trip?

Accepted Answer

480 km/h

Answer

490 km/h

Answer

500 km/h

Answer

520 km/h