Question

in a test 5 marks are given for every correct answer and -2 marks are given for every incorrect answer smitha answered all questions and scored (-15) marks though he got 3 correct answer. how many incorrect answer Had they attempted.​

Answer 1

Answer:

15 incorrect answer

Step-by-step explanation:

let the incorrect marks be y and incorrect answer be x

So, she answered 3 correct answer so her marks for correct answer is 3 × 5 =15

so her total marks is -15

Equation = 15+y=-15

=) y= -15-15

=) y=-30

-2×x= -30

x=-30÷-2=15

I hope it is helpful to you

Thank you