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SSC CHSL 2025 PYQ — Question 59

SSC CHSL - 22 Nov 2025 - Shift 3 • Quantitative Aptitude • Q59

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If a:b = 3:5 and b = 15, find a.

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Correct answer: B

Explanation

Has been given :

a : b = 3 : 5

b = 15

According to the formula:

Ratio = Real Number / Common Factor

b = 5x

5x = 15

x = 3

a = 3x= 3 × 3= 9