SOLUTION: loni has read 25% of a book. if she has been reading for 5 hours how many more hours will it take her to complete the book

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Question 188958This question is from textbook holt math course 1
: loni has read 25% of a book. if she has been reading for 5 hours how many more hours will it take her to complete the book This question is from textbook holt math course 1

Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
if she has read 25% then she has 75% left to read.....3 times what she has read already
:
so if if took 5 hours to read 25% then it will take 3(5)=15 hours to read the rest.
:
you could set this up as a proportion
:
.25%2F5=.75%2Fx
:
5(.75)=.25x
:
x=15 hours