Question

Doing a task need help with this question. David hikes 2 1/4 miles in 1/2 an hour

Part A: What is his rate in miles per hour?
Part B: At this rate, how long will it take him to walk 18 miles?
Part C: If he walks for 7 hours, how far will he have gone?

Answer 1

Part A: 9/2 or 1 1/4

Part B: 4

Part C: 63/2

Explanation:

PART A

2 1/4 = 9/4

Rate in miles per hour = (9/4) / (1/2)

= (9/4) X (2) = 2(9/4) = 9/2 miles per hour

PART B

9/2 miles = 1hr

18miles = x

(9/2)x = 18

x = 18 X (2/9)

x = 4

PART C

1hr = 9/2 miles

7hrs = x

x = 7(9/2)

x = 63/2

x = 31 1/2