What is the minimum amount of time Marley should devote to reading today?

Question

Marley has read 112.5 pages of a book. By the end of today, she plans to have read at least a total of 360 pages. If she reads 45 pages per hour, what is the minimum amount of time she should devote to reading today?

Answer 1

The answer is she should spend 5.5 hours on the book minimum today. Here is how you work that out. So take the amount she had already read and subtract it from the total pages she plan to read (360-112.5) which gives you 247.5 pages that she has left. Since you know that she read 45 pages in one hour, what you do next is make a equation where the number of hours she needs to reach her goal times 45 pages allows her to reach her goal. 45x= 247.5 ends up being the equation. Lastly you divide 45 by both sides and your end product is 5.5 hours.

Hope this helps!