Question
The marks scored by a student are directly proportional
to the time invested in studies. If the student gets 60 marks when he studies 4 hours a day, then how many hours he should use in his studies daily to get 75 marks?Solution
60 marks for 4 hours of study. Find constant k: 60 = k× 4 k = 15 Required marks= 75 marks. Find hours h= 75=15x h h= 75/15 h= 5
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