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3 years ago

It's 1:00 p.M. And I've driven 120 miles. At 3:00 p.M. I will have driven 208 miles. What is my speed?

Mathematics

2 answers:

bazaltina [42]3 years ago

7 0

Answer:

44 miles/hour

Step-by-step explanation: since speed = distance/time

= 88miles/2hours

=44miles/hour

statuscvo [17]3 years ago

5 0

From 1 pm to 3 pm is 2 hours.

208 miles - 120 mile = 88 miles

You drove 88 miles in 2 hours.

Speed = miles driven / time driven:

88 / 2 = 44 miles per hour

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3 years ago

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Lemur [1.5K]

You must travel at 42 mph for 4 hours

Solution:

Time varies inversely as rate of motion

Let "t" be the time required

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Then, we get

$t \propto \frac{1}{r}\\\\t = k \times \frac{1}{r}\\\\t = \frac{k}{r} -------- eqn 1$

Where, "k" is the constant of proportionality

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Substitute t = 3 and r = 56 in eqn 1

$3 = \frac{k}{56}\\\\k = 3 \times 56\\\\k = 168$

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r = ? and t = 4

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