Emma is driving from home to an appointment at a community center. She travels 40 miles in the first hour but realizes that at this speed, she will arrive 1 hour late. She increases her speed by 20 miles per hour for the remainder of the trip and arrives 20 minutes early. How far is the community center from her home?

Correct answer marked below

140 miles

160 miles

180 miles

200 miles

Correct

220 miles

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What this question tests

Your application of distance = rate × time to trains, boats, and commuters, including relative speed.

Mixing units (miles per hour vs. minutes) or averaging speeds — average speed is total distance over total time.