Ann and Bob planted trees on Friday. What is the ratio of

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Ann and Bob planted trees on Friday. What is the ratio of [#permalink]

06 Jul 2012, 13:08

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Ann and Bob planted trees on Friday. What is the ratio of the number of trees that Bob planted to the number of trees that Ann planted?

(1) Ann planted 20 trees more than Bob planted.
(2) Ann planted 10 percent more trees than Bob planted.

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Re: Ann and Bob planted trees on Friday [#permalink]

06 Jul 2012, 14:00

Alterego wrote:

Ann and Bob planted trees on Friday. What is the ratio of the number of trees that Bob planted to the number of trees that Ann planted?

1) Ann planted 20 trees more than Bob planted.
2) Ann planted 10 percent more trees than Bob planted.

What we want to know:
Bob/Ann = ?

(1) Ann = 20 + B, plugging it into our equation we have B/(B+20) . . . we can't determine the answer from this fraction

(2) Ann = (1 + 0.10) * Bob, rearranging this . . . Bob/Ann = 1/(1+0.10) = (1/1.1) . . . Sufficient

Re: Ann and Bob planted trees on Friday [#permalink] 06 Jul 2012, 14:00

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Ann and Bob planted trees on Friday. What is the ratio of

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Ann and Bob planted trees on Friday. What is the ratio of

Ann and Bob planted trees on Friday. What is the ratio of

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