Mathematics
rach0329
2017-08-13 15:18:15
Sam and Daniel are playing tag. Sam is originally 40 feet away from Daniel. Sam’s speed is 140 feet per minute; Daniel’s speed is 120 feet per minute. How long will it take will Sam tag Daniel?
ANSWERS
Youngdahl460
2017-08-13 21:08:09

2 minutes. It will take 40 feet for Sam to catch up with Daniel, so if Sam can run 20 feet faster than Daniel a minute, it will take 2 minutes.

Manda562
2017-08-13 21:09:24

s=140t-40, d=120t, when s catches d, s=d so: 140t-40=120t 20t-40=0 20t=40 t=2 So Sam will catch Daniel in 2 minutes.

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