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Quantitative Aptitude

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Number Systems and Ratio & Proportion

Question
19 out of 30
 

Two number are in the ratio 3 : 5. If 9 is subtracted from each, the new numbers are in the ratio 12 : 23. The smaller number is:

A 27
B 33
C 49
D 55
E None of These
Ans. B

69x – 23 x 9 = 60x – 12 x 9

9x = 23 x 9 – 12 x 9

X = 23 – 12 = 11

3x = 11 x 3 = 33

Number Systems and Ratio & Proportion Flashcard List

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