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
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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.
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