CSATPercentage, Profit & LossAlgebra2021

In an objective type test of 90 questions, 5 marks are allotted for every correct answer and 2 marks are deducted for every wrong answer. After attempting all the 90 questions, a student got a total of 387 marks. What is the number of incorrect responses?

A

9

B

13

C

27

D

43

Correct Answer: Option A

Explanation

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