A class spend 30 hours a week on mathematics, physics and computer. if the time spend on the subjects are in the proportion 4:3:3 how many hours are spent on each subject?
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Step-by-step explanation:
IF, time of maths : physics : computer = 4:3:3
then , 4x+3x+3x = 30hr ( here x is the time for one period )
10x = 30 HR
x = 3hrs
so one period of class is 3hr then,
maths - 4(3) = 12hrs
physics - 3(3) = 9hrs
computer - 3(3) = 9hrs
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total time ->. 30hrs
therefore, each class are conducted for 3hrs ..:);)
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