Discussion of Question with ID = 048 under Ratio-and-Proportion

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Question

If 50% of a number is equal to 9/13 of another number, then what is the ratio of first number to second number?

A

$1{5/13}$.

B

$2{7/12}$.

C

${1/3}$.

D

$3{4/5}$.

Soln.
Ans: a

We have ${50A}/100 = {9B}/13$, which can be re-arranged to $A/{9 × 100} = B/{50 × 13}$, so the required ratio is (9 × 100) : (50 × 13), which is 18 : 13. So the answer is ${18/13}$, which is same as: $1{5/13}$.


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