SOLUTION: A family's vacation destination is 850 miles from their home. They travel by car 6 hours on the first day of their trip. Their average speed is 45 mph. The next day they travel 7

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Question 1151038: A family's vacation destination is 850 miles from their home. They travel by car 6 hours on the first day of their trip. Their average speed is 45 mph. The next day they travel 7 hours, averaging the same speed. How many miles are left for the family to travel?

Found 3 solutions by MathLover1, josgarithmetic, MathTherapy:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
A family's vacation destination is 850 miles from their home.
d=800mil
They travel by car t%5B1%5D=6hon the first day of their trip. Their average speed is s%5B1%5D=45%28mil%2Fh%29
d%5B1%5D=s%5B1%5D%2At%5B1%5D
d%5B1%5D=45%28mil%2Fh%29%2A6h
d%5B1%5D=45%28mil%2Fcross%28h%29%29%2A6cross%28h%29
d%5B1%5D=45mil%2A6
d%5B1%5D=270mil->the first day of their trip
The next day they travel t%5B2%5D=7h, averaging the same speed.
d%5B2%5D=s%5B2%5D%2At%5B2%5D
d%5B2%5D=45%28mil%2Fh%29%2A7h
d%5B2%5D=45%28mil%2Fcross%28h%29%29%2A7cross%28h%29
d%5B2%5D=45mil%2A7
d%5B2%5D=315mil->the second day of their trip
How many miles are left for the family to travel?
in two days they have traveled: d%5B1%5D%2Bd%5B2%5D=270mil%2B315mil=585mil
d-%28d%5B1%5D%2Bd%5B2%5D%29=800mil-585mil=215mil
answer: 215mil are left for the family to travel


Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
system%28RT=D%2COR%2CD%2FT=R%29
FIRST DAY       45*6

SECOND DAY      45*7

REMAINING        d

TOTAL           850


d=850-45%2A6-45%2A7
highlight%28d=265%29

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

A family's vacation destination is 850 miles from their home. They travel by car 6 hours on the first day of their trip. Their average speed is 45 mph. The next day they travel 7 hours, averaging the same speed. How many miles are left for the family to travel?
I don't know how someone can get this wrong, when it's SO SIMPLE: