The number of girls studying Statistics is what percent approximate of the total number of students ...........

Quantitative Aptitude (CDS) Case Studies

For the next five (05) items that follow:
In a University there are 1200 students studying four difference subjects, Mathematics, Statistics, Physics and Chemistry. 20% of the total number of students are studying Mathematics, one-fourth of the total number of students are studying Physics, 320 students are studying Statistics and remaining students are studying Chemistry. Three-fifth of the total number of students studying Chemistry are girls. 150 boys are studying Mathematics. 60% of students studying Physics are boys. 250 girls are studying Statistics.

The number of girls studying Statistics is what percent (approximate) of the total number of students studying Chemistry?

58.8

73.5

78.7

80.6

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Explanation:

Number of girls studying Statistics = 250
Total Number of students studying Chemistry = 340
Thus, required percentage = 250 / 340×100=73.52=73.5(approx)
Hence option(2)