a student needs to score at least 30% marks to pass a test if a student gets 135 marks and failed by 15 marks
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let the total marks be a.
by question
30% of a = 135 + 15
30a = 150 x 100
a=15000/30
:. a = 500
a
by question
30% of a = 135 + 15
30a = 150 x 100
a=15000/30
:. a = 500
a
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