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1. Study the following pie-chart and bar graph and answer the questions that follows:
Percentage-wise distribution of Teachers in 6 Districts.

Number of males in each district out of 4500 Teachers.

The number of female teachers in District D is approximately what percent of the total number of teachers (both male & female) in District A?

A. 70%

B. 75%

C. 80%

D. 95%

Solution:

\begin{aligned} Total number of teachers in: \\ A → \frac{14}{100} \times 4500 = 630 \\ B → \frac{16}{100} \times 4500 = 720 \\ C → \frac{28}{100} \times 4500 = 1260 \\ D → \frac{15}{100} \times 4500 = 675 \\ E → \frac{21}{100} \times 4500 = 945 \\ F → \frac{6}{100} \times 4500 = 270 \end{aligned}

	A	B	C	D	E	F
Males	200	400	600	100	500	100
Females	430	320	660	575	445	170

Female teacher in D = 575
Total number of teacher in A
= 200 + 430
= 630
∴ Required percentage

\begin{aligned} = (\frac{575}{630} \times 100) % \\ = \frac{5750}{63} % \\ = 91.2 % \\ \approx 90 % \end{aligned}

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