SOLUTION: Your school is 18 3/4miles south of Pittsburgh and your house is 44 1/4 miles south of Pittsburgh. You leave your school at 5:00pm, traveling south by bicycle at an average speed o

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Your school is 18 3/4miles south of Pittsburgh and your house is 44 1/4 miles south of Pittsburgh. You leave your school at 5:00pm, traveling south by bicycle at an average speed o      Log On

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Question 95725: Your school is 18 3/4miles south of Pittsburgh and your house is 44 1/4 miles south of Pittsburgh. You leave your school at 5:00pm, traveling south by bicycle at an average speed of 15 miles per hour. Your father leaves Pittsburgh in a car at 5:45pm. He is driving south at an average speed of 55 miles per hour. Let t represent the time it takes your father to drive from Pittsburgh toward your house.
a) Find the time it would take you to ride your bicycle home.
b)Find the time your father will arrive home.
c)Write and equation to find your distance d1 from Pittsburgh after t hours

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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Your school is 18 3/4miles south of Pittsburgh and your house is 44 1/4 miles south of Pittsburgh. You leave your school at 5:00pm, traveling south by bicycle at an average speed of 15 miles per hour. Your father leaves Pittsburgh in a car at 5:45pm. He is driving south at an average speed of 55 miles per hour. Let t represent the time it takes your father to drive from Pittsburgh toward your house.
:
Time = dist/speed
:
a) Find the time it would take you to ride your bicycle home.
:
Let t1 = the time for your trip home (to differentiate from Dad's time)
Distance would be (44.25 - 18.75)
Speed is given as 15 mph
:
t1 = %28%2844.25-18.75%29%29%2F15
t1 = %2825.2%29%2F15
t1 = 1.7 hrs which is 1 + .7(60) = 1 hr 42 min
:
:
b)Find the time your father will arrive home.
t = 44.25%2F55
t = .8045 * 60 = 48.3 min
:
c)Write an equation to find your distance d1 from Pittsburgh after t hours
d1 = 15t + 18.75
:
:
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