Question

Mary reads 8 1/4 chapters in 5 1/2 hours. What is the unit rate in chapters per hour? Write your answer as a fraction or a mixed number in simplest form.

a) 1 1/2 chapters per hour
b) 2 3/8 chapters per hour
c) 1 7/8 chapters per hour
d) 1 3/4 chapters per hour

Answer 1

To find the unit rate in chapters per hour, divide the number of chapters by the number of hours. In this case, the unit rate is 1 1/2 chapters per hour.

Step-by-step explanation:

To find the unit rate in chapters per hour, we need to divide the number of chapters by the number of hours. In this case, Mary reads 8 1/4 chapters in 5 1/2 hours. To divide a whole number by a mixed number, we need to convert the mixed number into an improper fraction.

8 1/4 can be written as 33/4. To divide by a fraction, we multiply by its reciprocal. So, the unit rate is 33/4 * 2/11, which simplifies to 3/2 or 1 1/2 chapters per hour.