Aptitude - Ratio and Proportion - Discussion
Discussion Forum : Ratio and Proportion - General Questions (Q.No. 6)
6.
The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?
Answer: Option
Explanation:
Originally, let the number of boys and girls in the college be 7x and 8x respectively.
Their increased number is (120% of 7x) and (110% of 8x).
![]() |
![]() |
120 | x 7x | ![]() |
and | ![]() |
110 | x 8x | ![]() |
100 | 100 |
![]() |
42x | and | 44x |
5 | 5 |
![]() |
![]() |
42x | : | 44x | ![]() |
= 21 : 22. |
5 | 5 |
Discussion:
61 comments Page 6 of 7.
Sasha said:
1 decade ago
I like ramesh's methods ! thanks a lot :).
Prasanna said:
1 decade ago
@rajeev.
Yes you get the same answers.
Yes you get the same answers.
Muhammad Naeem said:
9 years ago
@Chaitra.
6 * 7 = 42 and 11 * 4 = 44.
6 * 7 = 42 and 11 * 4 = 44.
Yudhisthira sarapuria said:
6 years ago
20% increase mean 120/100 = 6/5.
(4)
DEEKSHITHA said:
2 years ago
Can you say how come 42/5 :44/5?
(24)
Simran said:
1 decade ago
Can someone give short method?
Chaitra said:
9 years ago
Ramesh sir, how you get 42:44?
ABHINESH said:
1 decade ago
(7x+0.2*7x)/(8x+0.1*8x)=21:22
Poonma said:
1 decade ago
Ramesh your to good.
Waquar said:
5 years ago
Thanks @Priyabrata.
(3)
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