Ratio and Proportion - Arithmetic Aptitude Questions and Answers

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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 C

Explanation :

Let 40% of A = \(\frac { 2 } { 3 }\) B

Then, \(\frac { 40A } { 100 } \) =\(\frac { 2B } { 3 }\)

\(\frac { 2A } { 5 }\)=\(\frac { 2B } { 3 }\)

\(\frac {A } { B } \) =[\(\frac { 2 } { 3 }\)x \(\frac { 5 } {2}\)] = \(\frac { 5 } {3}\)