In a quiz (+7) marks are awarded for each correct answer and (–4) for incorrect answer. (2+2)
(i)Find Gaurika’s total score if she answered 10 questions right and 5 went wrong.
(ii) Find Rohan’s scored if he has got 8 correct answers and 2 went wrong.
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Solution (2): Jack's scores in five successive rounds are = 25, – 5, – 10, 15, 10
= 25+\left(-5\right)+\left(-10\right)+15+1025+(−5)+(−10)+15+10
= 35
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