In a science olympiad , 5 marks are given for each correct answer and -2 incorrect answers . pankhuri answered all the questions and scored 26 marks , though she got 2 incorrect answers . How many questions did pankhuri answer correctly ?
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25
Answer:
6
Step-by-step explanation:
Let the no. of correct answers attempted be x
Then marks scored for correct answers = 5× x= 5x
No. of answers attempted incorrectly=2
so marks scores for incorrect answers= (-2)×2= -4
According to the question , total marks scored by her = 26
5x + ( -4) =26
5x - 4=26
5x =26+4
5x=30
x=30÷5
x=6
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