Math, asked by Rams4499, 1 year ago

explain it yaar
but ans is 10 ..
if we add 90+10=100..
as per the question is 120 know​

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Answers

Answered by tulasi6490
1
Hope it helps you please like it
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tulasi6490: You are welcome
Answered by Prateek5304
1
no of questions = 60
no of questions which were correct = x
marks gained by correct questions = 2x

no of questions which were incorrect = y
x+ y = 60
y= 60 - x
marks deducted by incorrect answers = 1*( 60-x)

2x -( 60-x)= 90
2x + x - 60= 90
3x = 150
x= 50

no of answers incorrect = 60-x
60-50= 10


no of answers incorrect is ten
if you fine any problem you may comment below

Rfff: Should not the answer be 15 bro
Prateek5304: no
Prateek5304: it's 10
Rfff: Why
Prateek5304: you may check in my answer
Prateek5304: any problem
Prateek5304: hey @rams4499 you haven't multipled 3 to ten
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