SOLUTION: to mow a lawn 10 m by 10 m takes 1 hour, how long will it take to mow a lawn 20 m by 12 m?

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Question 939695: to mow a lawn 10 m by 10 m takes 1 hour, how long will it take to mow a lawn 20 m by 12 m?
Found 3 solutions by josmiceli, stanbon, MathLover1:
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!


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Time to mow the lawns will be
proportional to their areas




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It will take 2 hrs 24 min

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
to mow a lawn 10 m by 10 m takes 1 hour, how long will it take to mow a lawn 20 m by 12 m?
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time/area = time/area
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t/(20*12) = 1/(10*10)
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t = 240/100
time = 2.4 hrs = 2hr 24min
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Cheers,
Stan H.
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Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

to mow a lawn by takes ,=> a lawn takes
to mow a lawn takes (t hours)
time will be proportional to area
...solve for



....
and is an answer to the question how long will it take to mow a lawn by




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