# Speed and Time – Quiz 7

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# Speed and Time – Quiz 7

### Introduction

Speed and Time is one of important topic in Quantitative Aptitude Section. In Speed and Time – Quiz 7 article candidates can find questions with answer. By solving this questions candidates can improve and maintain, speed, and accuracy in the exams. Speed and Time – Quiz 7 questions are very useful for different exams such as IBPS PO, Clerk, SSC CGL, SBI PO, NIACL Assistant, NICL AO, IBPS SO, RRB, Railways, Civil Services etc.

### Q1

Ravi runs 200 metres in 24 seconds. Find his average speed :
A. 20 km/h B. 24 km/h C. 28.5 km/h D. 30 km/h

D
Average speed = $\frac {200} {24} × \frac {18}{5}$ = 30 km/hr.

### Q2

Speed of a boat in still water is 3 km/hr. the speed of the stream is 2 km/hr. The time taken to go 4 km downstream in minutes is
A. 120 B. 96 C. 80 D. 48

D
Speed of the boat downstream = (3 + 2) km/hr
Distance to be traveled = 4 km
Hence, required time in minutes
= $\frac {4} {5}$ × 60 = 48 minutes.

### Q3

A man completes 30 km of a journey at 6 km/hr and the remaining 40 km of the journey in 5 hours. His average speed for the whole journey is :
A. 6 km/hr B. 7 km/hr C. 9 km/hr D. 8 km/hr

B
Average speed = $\frac {30 + 40} {\frac {30}{6} + 5} = \frac {70}{10}$ = 7 km/hr.

### Q4

A train with a speed of 60 kmph crosses a pole in 30 seconds. The length of the train is
A. 500 m B. 750 m C. 900 m D. 1000 m

A
Length of the train =60 × $\frac {5} {18}$ × 30 = 500 meter

### Q5

A train 100 m long is moving at 58 km/h. The time in seconds, it will take to pass another train 150 m long which is moving at 50 km/h in the same direction from the moment they meet is
A. 20 B. 30 C. 50 D. 70

C
Relative speed of the two trains with respect to each other
= 68 – 50 = 18 km/hr or 18 × $\frac {5} {18}$ = 5 m/s.
Distance to be covered = 150 + 100 = 250 meters
Hence, required time = $\frac {250} {5}$ = 50 seconds