Problema Solution
The ratio of Tom’s studying time on a weekday to his studying time on a weekend is 4:5. If he studies 2.4 hours on a weekday, how many hours does Tom study in total every week?
Answer provided by our tutors
let 'x' represent the total time that Tom studies every week
2.4 hours = he studies on a weekday
x - 5*2.4 hours = he studies on a weekend
The ratio of Tom’s studying time on a weekday to his studying time on a weekend is 4:5:
2.4 : (x - 5*2.4) = 4 : 5
by solving we find:
x = 15 hr
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Every week Tom studies 15 hours in total.