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SSC CGL 2018 PYQ — Question 40

SSC CGL Tier II Quant - 21/02/2018 • Quantitative Aptitude • Q40

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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

 

What are the total number of students who were present in the Biology examination from all the schools together?

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Correct answer: D

Explanation

The correct answer is option 4, i.e. 171150

Total no. of students present in the biology examination from all the schools

=[83300 × 65/35 × 32/100 + 101520 × 60/40 × 29/100 + 113520 × 40/60 × 30/100 + 60830 × 65/35 × 42/100 + 24003 × 55/45 × 25/100]

= 49504 + 44161 + 22704 + 47447 + 7334 = 171150