A student gets 4 marks for each correct answer and 1 mark is deducted for a wrong answer. If he had done 80 questions at all and he has got only 240 marks, The correct answer he has attempted are?

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10 May 2021 Marks A student gets 4 marks for each correct answer and 1 mark is deducted for a wrong answer. If he had done 80 questions at all and he has got only 240 marks, The correct answer he has attempted are?: OPtion
1) 62
2) 68
3) 72
4) 74
5) 58
6) 60
7) 64
8) 55
9) 53
10) None of the above; Correct Option: 7 Best Solution (3)

G.S.Kantharao 3 years AGO

Let x be correct answers
4x-(80-x)*1=240
5x=320=>x=64
My option is 7👈

Like? Yes (1) | No (1)

SAYAN CHATTERJEE 3 years AGO

Let correct answer be x and wrong be y
so, 4x-y=240
x+y= 80
On solving, x= 64.
Option 7.

Like? Yes | No (1)

Devendra Marghade 3 years AGO

Let the number of correct answers=x and wrong answers=(80-x)
Then, 4x - (80-x) = 240
=> x=64
Option 7)

Like? Yes | No (1)

Dimple

India

Punjab

Time: 00:01:33

Points

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There r few things whch we knw whch r nt capable of mathmatical reasoning nd when these can nt it is a sign dt our knowledge of them is very smal nd confusd nd where a mathmaticl reasing can be had . It is as dark a foly to make use a candle stick as to g

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A student gets 4 marks for each correct answer and 1 mark is deducted for a wrong answer. If he had

M4maths Previous Puzzles

10 May 2021 Marks