Math
posted by Brent .
Ms Lin has 6 hrs to finish a 400 page book. She has already read 150 pages. She read 40 pages in the first hour. What is the approximate number of pages she must read per hour to finish the book.
if she read 40 pages in 1 hour. She was able to read 1.5 pages a minute x 150 pages takes 225 minutes or 3.75 hours. to finish 250 left she have to read 4.1

Math 
Reiny
rate of reading at the beginning = 40 pages/hr
at that rate the time to read 150 pages = 150/40 hrs
or 15/4 hours
Time left to read the other 250 pages = 615/4
or 9/4 hrs
rate of reading needed to finish the book
= 250/(9/4) = 111 1/9 pages per hour
or appr 1.85 pages per minute
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