In an examination there were 640 boys and 360 girls, 60% of boys and 80% of were successful. The percentage of failure was :
A. 20%
B. 60%
C. 30.5%
D. 32.8%
Answer: Option D
Solution(By Examveda Team)
The number of failure boys= $$\frac{640 × 40}{100}$$
= 256
The number of failure girls
= $$\frac{360 × 20}{100}$$
= 72
Percentage of failure students
= $$\frac{(72 + 256)}{640 + 360}$$
= 32.8%
Related Questions on Percentage
A. $$\frac{1}{4}$$
B. $$\frac{1}{3}$$
C. $$\frac{1}{2}$$
D. $$\frac{2}{3}$$
Join The Discussion