Question

Ms Grace gave her class 12 minutes to read. Carrie reads 5 1/2 pages in that time. At what rate in pages per hour did she read?

Answer 1

Since it is asking for pages per hour, that is how the ratio (rate) needs to be written. Given 5.5 pages per 12 minutes, you need to convert minutes to hours before writing the ratio. Since there is 1 hour per 60 minutes, (12 minutes)(1 hour/60 minutes) = 12/60 hours = 0.2 hours.

Now that we have the time in hours, we can write the number of pages per hour. 'Per' in math means we are going to write a ratio: pages per hour = (5.5 pages)/(0.2 hour) = 5.5/0.2 pages per hour. Calculate the ratio using division and that is your answer.