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An examination consists of 160 questions...

An examination consists of 160 questions. One mark is given for every correct option. If one fourth mark is deducted for every wrong option and half mark is deducted for question left, then one person scores 79. And if half mark is deducted for every wrong and one-fourth mark is deducted for every left question, then person scores 76, then find the number of questions he attempted correctly

A

80

B

100

C

120

D

140

Text Solution

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The correct Answer is:
b
(i) Frame equations according to the data
(ii) Frame the equations according to the data and then solve
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