Aptitude - Ratio and Proportion - Discussion

Discussion Forum : Ratio and Proportion - General Questions (Q.No. 12)
12.
If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?
2 : 5
3 : 7
5 : 3
7 : 3
Answer: Option
Explanation:

Let 40% of A = 2 B
3

Then, 40A = 2B
100 3

2A = 2B
5 3

A = 2 x 5 = 5
B 3 2 3

A : B = 5 : 3.

Discussion:
25 comments Page 3 of 3.

Raghu said:   1 decade ago
why are we not taking as 140 (40+100)in this case??

Sanjeev said:   9 years ago
Please explain me Why you have taken 2b/3?

Narsim said:   7 years ago
You are right, thanks @Pratika.

Manjuu said:   5 years ago
Good explanation, thanks all.
(3)

Tejashri said:   9 years ago
No, @Mehak. It's wrong.


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