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A moving cargo
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18 Apr 2021, 09:25
18 Apr 2021, 09:25
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Question Stats:
66% (03:11) correct
33% (02:19) wrong based on 9 sessions
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A moving cargo train takes 5 minutes to pass a polar bear moving in the opposite direction at the speed of 15 miles per hour. If the length of the train is 1.25 miles, what is the speed of the train ?
A. 21.25 miles per hour
B. 30 miles per hour
C. 45 miles per hour
D. 20 miles per hour
E. 60 miles per hour
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A. 21.25 miles per hour
B. 30 miles per hour
C. 45 miles per hour
D. 20 miles per hour
E. 60 miles per hour
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A moving cargo
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Updated on: 19 Apr 2021, 09:08
Updated on: 19 Apr 2021, 09:08
1
\(\frac{1}{12}\)*(x-15)=\(\frac{5}{4}\)
x=30
B
- The above answer is incorrect. Please see user's reply below. Thank you.
x=30
B
- The above answer is incorrect. Please see user's reply below. Thank you.
Originally posted by toantoantoan on 18 Apr 2021, 21:40.
Last edited by toantoantoan on 19 Apr 2021, 09:08, edited 1 time in total.
Last edited by toantoantoan on 19 Apr 2021, 09:08, edited 1 time in total.
Re: A moving cargo
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19 Apr 2021, 06:54
19 Apr 2021, 06:54
opposite direction movement =sum of speed of train and living being
moving in same direction=relative difference between train speed and living being speed
question says: A moving cargo train takes 5 minutes to pass a polar bear moving in the opposite direction at the speed of 15 miles per hour.....
shouldn"t we have to add i mean = speed of train +speed of polar bear
moving in same direction=relative difference between train speed and living being speed
question says: A moving cargo train takes 5 minutes to pass a polar bear moving in the opposite direction at the speed of 15 miles per hour.....
shouldn"t we have to add i mean = speed of train +speed of polar bear
