How do you plan your time? - PowerPoint PPT Presentation

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How do you plan your time?. Created by Holden. The Train Ride. Tom wants to take the new train from Chicago to New York, a distance of 790 miles. Statement of Problem. The New train---. 790 miles. --- is 1.5 times faster than the old one that could travel at 120 mph.

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How do you plan your time?

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How do you plan your time l.jpg

How do you plan your time?


The train ride l.jpg

Created

by

Holden

The Train Ride

Tom wants to take the new train from Chicago to New York, a distance of 790 miles.


Statement of problem l.jpg

Statement of Problem

The New train---

790 miles

--- is 1.5 times faster than the old one that could travel at 120 mph.

How long will it take Tom to get to New York on the new train?


Set up for solving l.jpg

Set-up for Solving

  • The new train is 1.5 times faster than the old one that could travel at 120 mph. So--

  • Then use a proportion:

    180 mi. 790 mi.

    1 hr. N hr.

Old train: 120 mph

=

New train: 1.5 x 120 =180mph


Solution l.jpg

Solution

180 miles 790 miles

1 hourN hours

1(790) = 180 N

790/180 = N

N= 4.389 hrs

or 4 hrs, 23 minutes

=

.389 x 60 min = 23.348 min


Homework problem l.jpg

Homework Problem

Benny has a term paper due tomorrow and it still needs to be typed. He can type 40 words per minute and the term paper is 3600 words long. His friend Delilah types 2.5 times as fast as Benny. How long would it take Delilah to type the paper?


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