SOLUTION: The distance from cambridge to ottawa is 480 jm. Gerry is able to drive at 100 km/h on Highway 401 but can only average 60 k/h on Highway 7. If the trip takes 6 h, how far did he t

Question 23363: The distance from cambridge to ottawa is 480 jm. Gerry is able to drive at 100 km/h on Highway 401 but can only average 60 k/h on Highway 7. If the trip takes 6 h, how far did he travel on Highway 401.
Could you solve this please with systems.
Found 2 solutions by Earlsdon, stanbon:
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Try this:
This is the distance traveled on hwy 401 where r1 is 100 km/h
This is the distance traveled on hwy 7 where r2 is 60 km/h
The total distance is d1 + d1 = 480 km.
The total time is t1 + t2 = 6 hours. Rewrite this as: t2 = 6-t1

Here, you have substituted for (6-t1) for t2
so:
Simplify and solve for t1
Collect like-terms.
Subtract 360 from both sides.
Divide both sides by 40.
hours.
Now you can find d1, the distance traveled on hwy 401.

Km. The distance traveled on hwy 401.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!

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