In a test(+5)marks are given for every correct answer and (-1)marks are given for every incorrect answer.
(a)Rohit answered all the questions and scored 30 matks though he got 10 correct answer.
(b)Joy also answered all the questions and scored (-14)marks though his 8 questions were correct.
Find the number of questions incorrectly attempted by each one of them.
Answers
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Answer:
a) 20
b) 54
Step-by-step explanation:
a) marks obtained=30
correct answer=10
marks given for 10 correct answer=10×5=50
marks given for wrong answer=30-50= -20
number of wrong answer =-20/-1 =20
b) marks obtain by joy = -14
correct answer= 8
marks given for 8 correct answer= 8×5=40
marks for wrong answer= -14 -40= -54
number of wrong answer=-54/-1=54
I hope you understand .
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