Two cars are moving in the same direction with their respective speeds of 9 km/h and 5 km/h. Find the relative speed of 1st car with respect of 2nd.


A) 2 km/h

B) 4 km/h

C) 8 km/h

D) 6 km/h

Correct Answer:
B) 4 km/h

Description for Correct answer:
We know that for relative speed, the subtraction of speeds takes place, if the motions of the two objects are in the same direction.

Therefore, Required relative speed = 9 - 5 = 4 km/h

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








Comments

No comments available




Similar Questions
1). A man covered a distance of 12 km in 90 min by cycle. How much distance will he cover in 3 h, if he rides the cycle at a uniform speed?
A). 36 km
B). 24 km
C). 30 km
D). 27 km
-- View Answer
2). Two men start together to walk a certain distance, one at 4 km/h and another at 3 km/h. The former arrives half an hour before the latter. Find the distance.
A). 6 km
B). 9 km
C). 8 km
D). 7 km
-- View Answer
3). A man completes 30 km of a journey at 6 km/h and the remaining 40 km of the journey in 5 h. Find the average speed for the whole journey.
A). \( \Large 6 \frac{4}{11} \) km/h
B). 7 km/h
C). \( \Large 7 \frac{1}{2} \)km/h
D). 8 km/h
-- View Answer
4). Moving 6/7 of its usual speed a train is 10 min late. Find its usual time to cover the journey.
A). 25 min
B). 15 min
C). 35 min
D). 60 min
-- View Answer
5). Rani covers a certain distance by car driving at 5 km/h and returns the starting point riding on a scooter at 2 km/h. Find her average speed for the whole journey.
A). 3 km/h
B). 2 km/h
C). 5 km/h
D). 7.7 km/h
-- View Answer


6). 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
-- View Answer
7). 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). \( \Large \frac{11}{4} km\)
-- View Answer
8). 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
-- View Answer
9). 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
-- View Answer
10). 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.
A). 72 km
B). 76 km
C). 78 km
D). 68 km
-- View Answer