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Question:
How long does a 420–miles trip take moving at 50 miles per hour (mph)?
A
8 hours and 24 minutes.
explanation
Use distance formula:
Distance = Rate × time ⇒ 420 = 50 × T, divide both sides by 50. 420 / 50 = T ⇒ T = 8.4 hours.
Change hours to minutes for the decimal part. 0.4 hours = 0.4 × 60 = 24 minutes.
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