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2 years ago

11

URGENT!!!! whom gets this and answers right gets extra! What is the average speed of a bike rider who rides for 3 hours at 40km/

hr and then 2 more hours at 50km/hr?!

1 answer:

Ymorist [56]2 years ago

4 0

So if it’s 3hours for 40 and then 2 more hours for 50 is that the question

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frosja888 [35]

$\frac{1}{2} x+6(x+15)=12\\\\\frac{1}{2} x+6x+90=12\\\\6\frac{1}{2} x+90=12\\6\frac{1}{2} x=-78\\x=-12$

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