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
Average speed = [latex]\frac {200} {24} × \frac {18}{5}[/latex] = 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
Speed of the boat downstream = (3 + 2) km/hr
Distance to be traveled = 4 km
Hence, required time in minutes
= [latex]\frac {4} {5}[/latex] × 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
Average speed = [latex]\frac {30 + 40} {\frac {30}{6} + 5} = \frac {70}{10}[/latex] = 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
Length of the train =60 × [latex]\frac {5} {18}[/latex] × 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
Relative speed of the two trains with respect to each other
= 68 – 50 = 18 km/hr or 18 × [latex]\frac {5} {18}[/latex] = 5 m/s.
Distance to be covered = 150 + 100 = 250 meters
Hence, required time = [latex]\frac {250} {5}[/latex] = 50 seconds