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A car covers a distance from town A to town B at the speed of 58 km/h and covers the distance from town B to town A at the speed of 52 km/h. What is the approximate average speed of the car?

A) 55 km/h
B) 52 km/h
C) 48 km/h
D) 60 km/h

Correct Answer:

A) 55 km/h

Description for Correct answer:

We know that, if two equal distances are covered at two different speeds A and B,

then Average speed

= \( \Large \frac{2AB}{A+B} \)= \( \Large \frac{2 \times 58 \times 52}{58+52} \)

= 54.8 km/h = 55 km/h (approx.)

Part of solved Time and Distance questions and answers : >> Aptitude >> Time and Distance

Comments

Similar Questions

1). A student walks from his house \( \Large 2 \frac{1}{2} \) % km/h and reaches his school late by 6 min. Next day, he increases his speed by 1 km/h and reaches 6 min before school time. How far is the school from his house?

A). \( \Large \frac{5}{4} km \)

B). \( \Large \frac{7}{4} km \)

C). \( \Large \frac{9}{4} km\)

D). \( \Large \frac{11}{4} km\)

2). A man riding a bicycle from his house at 10 km/h and reaches his office late by 6 min. He increases his speed by 2 km/h and reaches 6 min before. How far is the office from his house?

A). 6 km

B). 7 km

C). 12 km

D). 16 km

3). A person can walk a certain distance and drive back in 6 h. He can also walk both ways in 10 h. How much time will he take to drive both ways?

A). 2 h

B). \( 2 \frac{1}{2} h \)

C). \( 5 \frac{1}{2} h\)

D). 4 h

4). Two men A and B travel from point P to Q, a distance of 84 km at 12 km/h and 16 km/h, respectively. B reaches Q and returns immediately and meets A at R. Find the distance from P to R.

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B). 76 km

C). 78 km

D). 68 km

5). A thief is spotted by a policeman from a distance of 200 m. When the policeman starts chasing, the thief also starts running. If the speed of the thief be 16 km/h and that of the policeman be 20 km/h, how far the thief will have run before he is overtaken?

A). 800 m

B). 850 m

C). 700 m

D). 650 m

6). A person sets out to cycle from A to B and at the same time another person starts from B to A. After passing each other, they complete their journeys in 16 h and 25 h, respectively. Find the ratio of speeds of the 1st man to that of the 2nd man.

A). 5:4

B). 5:3

C). 4:5

D). 3:5

7). John started from A to B and Vinod from B to A. If the distance between A and B is 125 km and they meet at 75 km from A, what is the ratio of John's speed to that of Vinod's speed?

A). 2 : 3

B). 3 : 2

C). 4 : 3

D). 5 : 4

8). A certain distance is covered at a certain speed. If half of this distance is covered in 4 times of the time, then find the ratio of the two Speeds.

A). 1 : 8

B). 1 : 4

C). 4 : 1

D). 8 : 1

9). A man covers half of his journey at 6 km/h and the remaining half at 3 km/h. Find his average speed.

A). 3 km/h

B). 4 km/h

C). 4.5 km/h

D). 9 km/h

10). A is twice as fast as B and B is thrice as fast as C. The journey covered by C in 56 min will be covered by A in

A). \( \Large 5 \frac{1}{3} min \)

B). \( \Large 2 \frac{1}{3} min \)

C). \( \Large 7 \frac{1}{3} min \)

D). \( \Large 9 \frac{1}{3} min \)