Distance formula problems

A passenger plane made a trip to Las Vegas and back. On the trip there it flew 432 mph and on the return trip it went 480 mph. How long did the trip there take if the return trip took nine hours?

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Distance formula problems

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Jun 22, 2010
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by: Karin

For this problem, we will use the distance formula to solve.

Distance = rate * time

We know that the distance to and from Las Vegas will be the same. So, since we know the rate and time we can find the distance.

D = rt r = 480 mph t = 9 hours

D = 480(9)
D = 4320 miles

We know that the distance to and from Las Vegas is 4320 miles. Now we can use this information to help us find the time to Las Vegas.

D = rt D = 4320 r = 432 t = ?
4320 = 432t

Now we can solve:

4320/432 = 432t/432
10 = t

The time to get to Las Vegas would be 10 hours.

I hope this helps!

Karin

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