Data Interpretation - Pie Charts - Discussion

The following pie-charts show the distribution of students of graduate and post-graduate levels in seven different institutes in a town.

Distribution of students at graduate and post-graduate levels in seven institutes:

4. 

What is the ratio between the number of students studying at post-graduate level from institutes S and the number of students studying at graduate level from institute Q?

[A]. 13 : 19
[B]. 21 : 13
[C]. 13 : 8
[D]. 19 : 13

Answer: Option D

Explanation:

Required ratio = (21% of 24700) = (21 x 24700) = 19 .
(13% of 27300) 13 x 27300 13


Vasavi said: (Feb 16, 2013)  
Could anyone explain why the % of Graduation for S is taken as 13?, while actually it was given as 14% in the Pie diagram?

Vijay said: (Mar 5, 2013)  
How to solve ratio method with calculator and without calculator ?

Seph said: (Jan 11, 2014)  
I don't get it. How it arrived with 19:13 as an answer?

Hima said: (Nov 25, 2014)  
(21%24700/13%27300) = (19%13).

Lovely said: (Dec 17, 2014)  
21/100*24700:13/100*27300.

= 5187:3549 (Divide both sides by 3).

= 1729:1183.

= (1+7+2+9) : (1+1+8+3).

= 19:13.

Tausif said: (Jan 10, 2015)  
@Lovely but this is not true for all cases. May please provide logical details.

Sushil said: (Oct 17, 2015)  
Please tell how would we calculate ratio for 393/933?

Liz said: (Dec 6, 2015)  
Why is it 13% instead of 14% on the pie graph?

Sanju said: (Nov 13, 2016)  
Please give me exact calculation without using the calculator.

Ram said: (May 8, 2018)  
Graduate students number is 27300.

Post graduate student number is 24700.

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