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Expert: - 1/17/2012


Question
if 17 girls can plant 51 trees in a day. how many trees could 26 girls plant in an hour?

Answer
Hello Suzi,

17 girls planting 51 trees in one day ==> 1 girl can plant 51/17 = 3 trees per day.

Now divide that by 24 hrs in a day to get: 1 girl can plant 3/24 = 1/8 of a tree in 1 hr.

Thus, 26 girls can plant 26*(1/8) = 13/4 = 3.25 (rounded down to 3) trees in 1 hr.

I hope this helps.

Abe  :-)

Algebra

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Volunteer

Abe Mantell

Expertise

Hello, I am a college professor of mathematics and regularly teach all levels from elementary mathematics through differential equations, and would be happy to assist anyone with such questions!

Experience

Over 15 years teaching at the college level.

Organizations
NCTM, NYSMATYC, AMATYC, MAA, NYSUT, AFT.

Education/Credentials
B.S. in Mathematics from Rensselaer Polytechnic Institute
M.S. (and A.B.D.) in Applied Mathematics from SUNY @ Stony Brook

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