In a quiz, positive marks are given for correct answers and negative marks are given for incorrect answers. If jack’s scores in five successive rounds were 25,-5,-10,15 and 10, what was his total at the end?

Jack’s scores in five successive rounds are and 25, -5, -10,15 and 10.
Total marks got by Jack = 25+(-5) +(-10) +15+10
= 25-15+25=35
Thus, 35 marks are got by Jack in a quiz.

7 Maths Chapter 1 Exercise 1.1 Question 2, 3, 4, 5 & 6

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