SOLUTION: Bert is 18 km away from Brenda. Both begin to walk toward each other at the same time. Bert walks 2 km per hour. They meet in 4 hours. How fast is Brenda walking?
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Question 384357: Bert is 18 km away from Brenda. Both begin to walk toward each other at the same time. Bert walks 2 km per hour. They meet in 4 hours. How fast is Brenda walking? Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! Bert is 18 km away from Brenda. Both begin to walk toward each other at the same time. Bert walks 2 km per hour. They meet in 4 hours. How fast is Brenda walking?
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distance = 18 km
bert speed 2 km/h
Brenda x km/h
time they meet = 4 hours.
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they are walking towards each other
So add up their speeds
combined speed = x+2 km/h
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t=d/r
t=18/(x+2)=4
multiply by (x+2)
18=4(x+2)
18=4x+8
-8
18-8 = 4x
10 = 4x
/4
10/4=x
x=2.5 km/h Brenda's speed
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m.ananth@hotmail.ca.
