In a test, 7 marks are given for each correct answer and (-4) marks are given for every wrong answer. If Disha answered 22 questions correctly and got 126 marks, how many questions did she answer incorrectly?
Answers
Answered by
15
Answer:
7
Step-by-step explanation:
no. of correct answer =22
marks alloted for every correct answer =7
marks alloted for incorrect answer=-4
no. of incorrect answer =y
total marks =126
expression
(7×22)+(-4×y)=126
154-4y=126
-4y=126-154
-4y=-28
y=-28/-4
7
no. of incorrect answer =7
Answered by
4
Answer:
1)disha answered 22questions
126 marks ,
so, 7*22 = 154
total marks 154 ,
eachcorrect answer is for 7
each wrong answer is for -4
154-126= 28
she lost 28 marks so , 28/4 is 7
7 answers disha answered wrong
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