Question

5-4: mathxl for school practice & problem solving
shandon can read 6 pages in 15 minutes. betty can read 12 pages in 1 hour. explain how you could use a table or graph to find how much longer it would take betty to read a 240 page book than shandon.
make a table of ____ to find how long it takes each to read __ pages. then, find the __ it would take betty ____ hours longer to read the book.

Explanation:

Step1: Calculate Sheldon's rate

Sheldon reads 6 pages in 15 minutes. Convert to pages per hour:
15 minutes = $\frac{15}{60} = 0.25$ hours.
Rate: $\frac{6}{0.25} = 24$ pages/hour.

Step2: Calculate Sheldon's total time

Time for 240 pages: $\frac{240}{24} = 10$ hours.

Step3: Identify Betty's rate

Betty reads 12 pages in 1 hour, so rate = 12 pages/hour.

Step4: Calculate Betty's total time

Time for 240 pages: $\frac{240}{12} = 20$ hours.

Step5: Find time difference

$20 - 10 = 5$ hours.

Answer:

Make a table of reading rates to find how long it takes each to read 240 pages. Then, find the difference it would take Betty 5 hours longer to read the book.