In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer.
Roy answered all the questions and scored 30 marks though he got 10 correct?
Find the total number of sums.
Answers
Answered by
1
Answer:
20 sums
because he got 10 correct so 50 marks
but recieved only 30 means 10 were wrong (-2×10)
50-20=30 marks
Answered by
1
Answer:
he give 10 answer correct mean they got marks =
10×5 =50
He scored 30.
50-30=20.
and -2 is given to wrong ans.
so 20÷-2=10.
correct answer=10
wrong answer=10
total sum =20.
pls mark as brainleast ans.
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