Answered

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In a test,correct answers carry +3 marks and wrong answers carry -1 marks.Ramesh answered all the questions.He scored 79 marks,though he maked 5 mistakes.Find the number of correct answers?

Sagot :

jigmewangmost

Step-by-step explanation:

let wrong answers be y

let right answer be x

3x-1y=79

find another equation

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