explain it yaar
but ans is 10 ..
if we add 90+10=100..
as per the question is 120 know
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tulasi6490:
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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
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
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