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In a test consisting of 150 questions, a candidate correctly answers 60% of the first 90 questions. What percentage of the remaining questi…

3223Medium DSSSB TGT Computer Science 0 replies

In a test consisting of 150 questions, a candidate correctly answers 60% of the first 90 questions. What percentage of the remaining questions does he need to answer correctly so that he has 64% of all the questions answered correctly in the test?

A68%
B72%
C70%
D66%

Correct answer: C

Explanation

First 90 questions correct = 54. Required total correct = 64% of 150 = 96. So 96 − 54 = 42 of the remaining 60 must be correct, i.e. 42/60 × 100 = 70%.

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