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22. Sammy walks home from school every day at a rate of 4 miles per hour. It takes him 30 minutes
to reach home. His sister, Candy, runs home from the same school every day at a rate of 6 miles
per hour. How many fewer minutes does it take Candy to reach home from school each day
compared to Sammy?

Sagot :

Sammy walks at 4 miles an hour for half an hour. This means the walk is 2 miles in 30 minutes.

Candy is going 6 miles an hour, so it will only takes her 1/3 of an hour, or 20 minutes, to cover 2 miles.

So, Candy gets home 10 minutes faster (30-20) than Sammy.
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