Word Problem 1

Miscellaneous Basic Maths Problems 0

Problem 1: In an exam a candidate scores 2 marks for a correct answer and loses 1 mark for every wrong answer. If he attempts for 60 questions, and gets a score of 39, how many answers he opted as correct?

Solution:

There are 60 questions to be answered in the exam!

Let us suppose;

$Correct Answers =y$

$\Rightarrow Incorrect Answers =60-y$

Score;

$Correct Score =2 \times y= 2y$

$Incorrect Score = 1 \times (60-y)= 60-y$

So,

$Total Score = Correct Score - Incorrect Score$

$\Rightarrow Total Score = 2 y -(60-y)$

$\Rightarrow Total Score = 3 y -60$

But ;

$Total Score = 39$

$\Rightarrow 39= 3y-60$

$\Rightarrow 3y=99$

$\Rightarrow y=33$

So, Correct answers were 33

(math portion of job test)

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Word Problem 1

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