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Mathematics 16 Online
OpenStudy (anonymous):

Omar drove 693 miles in 11 hours. At the same rate, how long would it take him to drive 315 miles?

OpenStudy (amistre64):

what is the defined rate?

OpenStudy (anonymous):

I don't know

OpenStudy (amistre64):

hmm, how do we define a rate?

OpenStudy (anonymous):

Do we multiply?

OpenStudy (amistre64):

prolly not. let define a rate as this per that, which lends itself to division

OpenStudy (anonymous):

Divide I meant to say

OpenStudy (anonymous):

So 693/11?

OpenStudy (amistre64):

lets do a rate of miles per hour, and yes, thats our rate

OpenStudy (amistre64):

now for some n hours, at that rate, we end up with 315 miles sooo 693 miles -------- * n hours = 315 miles, solve for n 11 hours

OpenStudy (anonymous):

I got 63 as the answer

OpenStudy (amistre64):

it doesnt take longer to go a shorter distance, it has to be less than 11

OpenStudy (anonymous):

(;-;)

OpenStudy (amistre64):

:) n*693/11=315 n=315(11)/693

OpenStudy (anonymous):

I got 5 as the answer

OpenStudy (amistre64):

5 is better ues

OpenStudy (amistre64):

yes

OpenStudy (anonymous):

Thank you :D

OpenStudy (amistre64):

youre welcome

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