1.In a competitive examination, there are 60 questions. The correct answer
would carry 2 marks, and for incorrect answer 1 mark would be subtracted.
smith had attempted all the questions and he got total 90 marks. Then how
many questions he got wrong. ( use two variables)
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Answer:
Step-by-step explanation:
Let x be the no. Of correct answers and y be the no. Of wrong answers
X+y=60
2x-y=90
Solving both equations you would get
X=50 and y=10
riya27042001:
Pls Mark brainliest if it helped...thanks!
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