SOLUTION: Tim leaves on his bike at 10 a.m. traveling 16 mph. At 10:29 a.m. his sister noticed he forgot his wallet. She leaves on the same road at 10:30 a.m. driving 36 mph. After how ma
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-> SOLUTION: Tim leaves on his bike at 10 a.m. traveling 16 mph. At 10:29 a.m. his sister noticed he forgot his wallet. She leaves on the same road at 10:30 a.m. driving 36 mph. After how ma
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Question 543628: Tim leaves on his bike at 10 a.m. traveling 16 mph. At 10:29 a.m. his sister noticed he forgot his wallet. She leaves on the same road at 10:30 a.m. driving 36 mph. After how many minutes will she reach him Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! How much of a head start did Tim have?
10 AM to 10:30 AM is hrs
At mi/hr, Tim goes mi
--------------
Let = the time it takes for his sister
to catch him.
Let = the distance she has to travel
Her equation:
(1)
Tim's equation:
(2)
Note that they will both trvel for the same
amount of time after Sister leaves and Tim
has 8 miles less to travel.
Substitute (1) into (2)
(2)
(2)
(2) hrs min
After 24 minutes she will catch him
