Math, asked by sangitasharma11454, 9 months ago

Please solve this question ​

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Answered by arnav1232
1

A) SHREYASTHA GOT 18 CORRECT

SO SHE'S AWARDED 18*5 = 90 MARKS

12 INCORRECT SO LOSS OF 12*3=36

HENCE NET SCORE= 90-36= 54

B) HE ATTEMPTED 22 QUESTIONS

SO LET NO OF INCORRECT QUESTIONS = x

THEN CORRECT QUESTIONS = 22-x

HIS 3 MARKS ARE CUT FOR INCORRECT SO LOSS = -3x

HE GETS 5 MARKS FOR CORRECT SO GAIN = 5(22-X)= 110-5X

NOW AS PER Q, 110-5X-3X=70

SO 8x= 40 or x =5 so no of incorrectly answered questions is 5

PLZ MARK ME AS THE BRAINLIEST!

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