SOLUTION: Maria left the airport and drove toward the recycling plant. Three hours later jenny left driving 30 km/hr faster in an effort to catch up to her. After two hours, Jenny finally ca

Question 895064: Maria left the airport and drove toward the recycling plant. Three hours later jenny left driving 30 km/hr faster in an effort to catch up to her. After two hours, Jenny finally caught up. Find Maria's average speed.
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Maria left the airport and drove toward the recycling plant. Three hours later jenny left driving 30 km/hr faster in an effort to catch up to her. After two hours, Jenny finally caught up. Find Maria's average speed.
***
let x=Maria's average speed
x+30=jenny's average speed
Average speed=distance/travel time
distance=(x+30)*2
travel time=3+2=5 hrs
x=(x+30)*2/5
5x=2x+60
3x=60
x=20
Maria's average speed=20 km/hr

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