SOLUTION: Jason drove for 4 hours on the freeway at the start of his trip. Then he turned onto a country road which forced him to reduce his speed by 20 miles per hour. He drove 5 more hours

Question 1135233: Jason drove for 4 hours on the freeway at the start of his trip. Then he turned onto a country road which forced him to reduce his speed by 20 miles per hour. He drove 5 more hours on this country road. If the total trip was 485 miles, what was his speed on the freeway
Answer by ikleyn(52805) (Show Source): You can put this solution on YOUR website!
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Please pay attention on how I edited your post to make the Math problem absolutely clear.

         Jason drove for 4 hours on the freeway at the start of his trip. Then he turned onto a country road 
         which forced him to reduce his speed by 20 miles per hour. He drove 5  hours 
         on this country road. If the total trip was 485 miles, what was his speed on the freeway ?

Solution

Let x be his speed on the freeway (the unknown under the question).


Then his speed onto the country road was (x-20) miles per hour.


The equation for the total traveled distance is


    4*x + 5*(x-20) = 485 miles.


Simplify and solve it on your own.


ANSWER.   = 65 miles per hour.

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Why did I make that editing ?

Because the passage "He drove 5 more hours on this country road" can be understood as "(4+5) = 9 hours on this country road".

After editing this "paraziting" meaning gone out.

Memorize: Math problem formulation is correct if and only if it is absolutely clear and clean.

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