SOLUTION: Kim Lu can now mow 2 lawns in one and a half hours. How long will it take him to mow 6 lawns?

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Question 91676: Kim Lu can now mow 2 lawns in one and a half hours. How long will it take him to mow 6 lawns?
Answer by ptaylor(2198) About Me  (Show Source):
You can put this solution on YOUR website!

Kim Lu mows at the rate of 1 lawn every 90min/2 or 45min or (3/4)hr
Therefore Kim Lu can mow 6 lawns in 6*(3/4)hr or 4.5 hr.

Hope this helps---ptaylor