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Mathematics 17 Online
OpenStudy (anonymous):

Distance, Spee and Time A pilot flew a jet from Montreal to Los Angeles, a distance of 2500mi. On the return trip, the average speed was 20% faster than the outbound speed. The round trip took 9 hours 10minutes. What was the speed from Montreal to Los Angeles?

OpenStudy (skullpatrol):

Any ideas?

OpenStudy (anonymous):

Nope

OpenStudy (skullpatrol):

Do you know the distance formula?

OpenStudy (skullpatrol):

@angelita321 are you still there?

OpenStudy (anonymous):

Yes I know it

OpenStudy (anonymous):

I. Was trying to type it :O

OpenStudy (skullpatrol):

Distance traveled = rate * time traveled $$d=rt$$

OpenStudy (anonymous):

D=√(x2-x1)^(2)+(y2-y1))

OpenStudy (skullpatrol):

That is the formula for points on a plane, This is a rate-time-distance word problem, right?

OpenStudy (anonymous):

Yea

OpenStudy (skullpatrol):

Have you used the formula d=rt before?

OpenStudy (anonymous):

Not really

OpenStudy (skullpatrol):

I hope you are familiar with distance (d) and time (t), so that leaves rate (r) as the distance traveled per unit of time traveled, right?

OpenStudy (anonymous):

Aha

OpenStudy (skullpatrol):

Making a sketch may help with word problems.

OpenStudy (anonymous):

Okay

OpenStudy (skullpatrol):

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