If two-ninths of the teachers who teach Physics are female, then the number of male Physics teachers is approximately what percentage of the total number of teachers who teach Chemistry?

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Solution

The correct option is A
57

No. of teachers in Physics = 1800 x $\frac{17}{100}$ = 306

No. of male teachers in Physics = $\frac{(9 - 2)}{9}$ x 306 = 238

Required percentage = $\frac{238}{23 \times 18}$ x 100 $\approx$ 57%

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If two-ninths of the teachers who teach Physics are female, then the number of male Physics teachers is approximately what percentage of the total number of teachers who teach Chemistry?

The correct option is A 57 No. of teachers in Physics = 1800 x 17100 = 306 No. of male teachers in Physics = (9−2)9 x 306 = 238 Required percentage = 23823×18 x 100 ≈ 57%

The correct option is A
57

No. of teachers in Physics = 1800 x $\frac{17}{100}$ = 306

No. of male teachers in Physics = $\frac{(9 - 2)}{9}$ x 306 = 238

Required percentage = $\frac{238}{23 \times 18}$ x 100 $\approx$ 57%