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SSC CGL 2018 PYQ — Question 25

SSC CGL Tier II Quant - 21/02/2018 • Quantitative Aptitude • Q25

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The table given below shows the number of students who were absent and percentage of students who were present in the given two examinations from five different schools. The table also shows the percentage of students who were present in the Biology and Physics examination respectively.

School Absent(in %) Present(in %) Biology(in %) Physics(in%)
K 83300 65 32 68
L 101520 60 29 71
M 113520 40 30 70
N 60830 65 42 58
O 24003 55 25 75

 

The ratio of present ages of Simi and Seema is 5 : 4. After 9 years the ratio of their ages will be 8 : 7. What is Simi's present age (in years)?

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2, i.e. 15

Let the present ages of simi and seema be 5x and 4x respectively

AQ

5x+9/4x+9 = 8/7

35x + 63 = 32x + 72

3x = 9

x = 3

Present age of simi = 5 × 3 = 15 years