SOLUTION: Mr. Santos traveled for 2 hours at a constant speed. Because of potholes, he reduced his speed by 7 kph for the next 2 hours. if he traveled 206 km, what was his speed on the first

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Question 983295: Mr. Santos traveled for 2 hours at a constant speed. Because of potholes, he reduced his speed by 7 kph for the next 2 hours. if he traveled 206 km, what was his speed on the first part of the trip?

Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
________________rate,speed_______time___________distance
constant__________r_______________2_____________r*2
potholes________r-7_______________2_____________(r-7)*2
Total____________________________________________206

2r%2B2%28r-7%29=206