Time, Speed, and Distance Questions & Answers

Q21 :

A car moves with a speed of 80 km/hr. What is the speed of the car in metres per second?

A

$22frac{2}{9} text{ m/sec}$

B

8 m/sec

C

$20frac{1}{9} text{ m/sec}$

D

$18frac{1}{9} text{ m/sec}$

View Answer

Correct Answer: A

$22frac{2}{9} text{ m/sec}$

Description:

$80 text{ km/hr } = frac{80 times 1000}{60 times 60} = 22frac{2}{9} text{ m/sec}$

Q22 :

A man travels 480 kms. He covers two-thirds of this distance by train, one-fifth by bus and remaining by taxi. What is the distance travelled by taxi?

A

44 km

B

54 km

C

64 km

D

74 km

View Answer

Correct Answer: C

64 km

Description:

Let the journey by taxi $= x text{ km }$

As per question

$therefore frac{2}{3} times 480 + frac{1}{5}times 480 + x = 480$

$= 320 + 96 +x = 480$

$x = 480-416$

$x = 64 text{ km}$

Q23 :

Two men P and Q start a journey from same place at a speed of 3 km/hr and $3frac{1}{2}$ km / hr respectively. If they move in the same direction then what is the distance between them after 4 hours?

A

3 km

B

$2 frac{1}{2} text{ km}$

C

2 km

D

$3 frac{1}{2} text{ km}$

View Answer

Correct Answer: C

2 km

Description:

$begin{aligned} text{Speed} &= frac{7}{2}-3 &= frac{1}{2} text{ km/hr.} text{So, D} &= text {s } times text{t} Rightarrow text{D} &= frac{1}{2} times 4 &= 2text{ km} end{aligned}$

Q24 :

A 110 metres long train passes a telegraph pole in 3 seconds. It will cross a railway platform 165 metres long in—

A

4.5 seconds

B

5 seconds

C

7.5 seconds

D

10 seconds

View Answer

Correct Answer: C

7.5 seconds

Description:

Speed of the train $= frac{110}{3} text{ m/s}$

when it cross a railway platform 165 metres, the time taken

$= dfrac{165 + 110}{frac{110}{3}}$

$= dfrac{275 times 3}{110}$

= 7.5 Seconds

Time Speed and Distance Questions Answers