Question

Rhianna took a total of 10 pages of notes during 2 hours of class. In all, how many hours will Rhianna have to spend in class before she will have a total of 15 pages of notes in her notebook? Assume the relationship is directly proportional.

Answer 1

10 pages 2 hrs
15 pages x hrs
x=15•2/10
x=3 hrs

Answer 2

Explanation:

if 10 pgs = 120 mins

then 15 pgs = 15 × 120÷10

=1800÷10

= 180 mins

if 60 min = 1 hr

then 180 min = 180×1÷60

= 3 hrs

thus it will take her 3hours