Question

in a mathematics test, there are 60 question. There is 2 marks for every correct answer, and 1/3 marks is deducted for each unattempted question or wrong solution. if Zaheer got 50 marks, how many questions did he answer correctly.
plz answer it fast and correctly because tomorrow is my test and the chapter is linear equations and inequalities. ​
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Answer 1

Answer:

20

Step-by-step explanation:

Let the correct question is x

So, incorrect questions will be (50-x)

ATQ,

Correct questions x 2 marks + Incorrect questions x (-1/3) = 50

x * 2 + (50-x) * (-1/3) = 50

$2x + (50-x) * \frac{-1}{3} = 50 \\\\2x + \frac{50-x}{3} = 50$

Taking LCM

$\frac{6x+50-x}{3} = 50 \\5x + 50 = 50*3\\5x = 150-50$

5x = 100

x = 100/5

x = 20

20 questions he answered correctly.

Hope it helps

Answer 2

Answer:

25

Step-by-step explanation:

bcoz

in paper there are 60 questions

each 2 marks

if u got 50 marks in that subject

it mean ur 25 answers are correct

(each have 2 marks )

means 50 ÷2 = 25

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