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In two successive years, 80 and 60 stude...

In two successive years, 80 and 60 students of a school appeared at the final examination of which 60% and 80% passed respectively. The average rate of students passed (in percent) is

A

`68%`

B

`68 4/7%`

C

`70%`

D

`72 3/7 %`

Text Solution

Verified by Experts

The correct Answer is:
B
कुल छात्र = 80+ 60 - 140
पास हुए कुल छात्र = `80xx60% +60xx80%`
`= 48 + 48 =96`
`therefore ` अभीष्ट प्रतिशत =` (96)/(140) xx 100 = 68 4/7%`
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