What is the difference between the number of female teachers in District F and the total number of teachers (both male and female) in District E?

Answer: Option B

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

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

Number of female teachers in F = 170
Total number of teachers in E
= 500 + 445
= 945
∴ Required difference
= 945 - 170
= 775