6th Grade Math Problem?
Max and Sam have to mow their parking strips that are the same size. Max can mow his parking strip in 6 minutes and Sam can mow his parking strip in 9 minutes. At what time will Sam have twice as much grass to mow as Max.
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Verified answer
let p=parking's area
Max's speed = p/6
Sam's speed = p/9
let n=the area that Max mowed
t the time searched
p-t*p/6=2(p-t*p/9)
p-tp/6=2p-2tp/9
divide the 2 menmbers by p
1-t/6=2-2t/9
2t/9-t/6=1
(4t-3t)/18=1
t=18mn