Question

Del ray can run 20 1/2 miles in 2 1/4 hours. How many miles per hour can he run?

Answer 1

$20 \frac{1}{2} :2 \frac{1}{4} = \frac{41}{2}: \frac{9}{4}= \frac{41}{2}* \frac{4}{9} =\frac{82}{9} = 9 \frac{1}{9} \ \ \text{miles per hour}$