Question

The anderson's drove 175 miles in 3 1/2 miles. What is their average driving rate, in miles per hour? At this rate, how many miles will theAndersons drive in 8 1/2 hours? What is the Anderson's driving rate in feet per second? Round to the nearest tenth

Answer 1

50 mph, 450 mi, 73.3 ft/sec

Explanation:

Part 1:

Find the unit rate (which here is mph).

175 mi

------------- = 50 mph

3.5 hrs

Part 2:

In 8.5 hrs, the Andersons can expect to cover (50 mph)(8.5 hr) = 425 mi

Part 3:

50 mph 88 ft/sec

------------ * ----------------- = 73.33 ft/sec, or 73.3 ft/sec to the nearest tenth.

1 60 mph