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:

she had attempted 15 incorrect answers

Step-by-step explanation:

3*5+-2*x=-15

15+-2x=-15

-2x=-30

x=-30/-2

x=15

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