Civil Engineering - UPSC Civil Service Exam Questions - Discussion

2. 

A line of true length 500 m when measured by a 20 m tape is reported to be 502 m long. The correct length of the tape is

[A]. 19.92 m
[B]. 20.08 m
[C]. 20.80 m
[D]. 21 m

Answer: Option B

Explanation:

No answer description available for this question.

Manjunath Biradar said: (Jun 25, 2014)  
500y = 502x20.

y = 502x20/500.

y = 20.08.

Sumon said: (Jan 21, 2017)  
(TrueLength/MeasuredLength) = (IncorrectLength of Tape or Chain/Correct Length of Tape or Chain).

500/502 = 20/L,
L = 20.08m.

Navi said: (Mar 14, 2017)  
The answer should be A.

Deepak Rawat said: (Apr 20, 2017)  
Yes, it must be A.

It will take 25+1 length to measure 502 meter in 25 length it will measure 500 m and last one length it will measure 2m.

Actual length=19.92 measured = 20m.
L actual={19.92x25}+ 2 = 500m.
L mesrd=(20x25)+2 = 502m.

Chhaya said: (May 23, 2017)  
Agree @Deepak Rawat.

(500/502) * 20 = 19.92.

Shivu said: (Jun 13, 2017)  
Here,

500 = (x/20) * 502,
x = 19.92 m.

Saddam Haleem said: (Apr 18, 2018)  
"A" option is correct tape is too short so thats the reason it gives greater lenght as compared to actual lenght.

Shaharukh Pathan said: (May 12, 2018)  
Option A is the correct answer (500x20 )÷ 502 = 19.92m.

Pushp Shankar said: (Oct 26, 2018)  
@All.

True * true = wrong * wrong.
500 * 20=502 * wrong length of tape,
So, after calculation, it is 19.92 that is A is the correct answer.

K-Wireko said: (Oct 24, 2019)  
X/20 = 500/502.
X = 500/502*20 = 19.92m.

The answer is A.

Anuj said: (Dec 28, 2019)  
A is correct.

True*True = False*False
20*500 = 502*l
L = 19.92m.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.