A quiz competition has a total of 25 questions. Every right answer gets 3 points and each wrong answer gets one negative point. If Alex got 13 questions as right, 3 un-answered and, rest of them wrong, how many points did Alex score in the competition?

-15

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Solution

The correct option is D 30
The points for 13 right answers = 13 x 3
= 39

The number of wrong answer = 25 - (13 + 3)
= 25 - 16
= 9

The negative points for 9 wrong answer = 9 x -1
= -9

Total point scored = 39 - 9
= 30

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A quiz competition has a total of 25 questions. Every right answer gets 3 points and each wrong answer gets one negative point. If Alex got 13 questions as right, 3 un-answered and, rest of them wrong, how many points did Alex score in the competition?

The correct option is D 30The points for 13 right answers = 13 x 3 = 39 The number of wrong answer = 25 - (13 + 3) = 25 - 16 = 9 The negative points for 9 wrong answer = 9 x -1 = -9 Total point scored = 39 - 9 = 30

The correct option is D 30
The points for 13 right answers = 13 x 3
= 39

The number of wrong answer = 25 - (13 + 3)
= 25 - 16
= 9

The negative points for 9 wrong answer = 9 x -1
= -9

Total point scored = 39 - 9
= 30