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# Renee can mow a lawn in 2 hours, and Jeremy can mow the same lawn in

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Math Expert
Joined: 02 Sep 2009
Posts: 61510
Renee can mow a lawn in 2 hours, and Jeremy can mow the same lawn in  [#permalink]

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26 Nov 2019, 00:27
00:00

Difficulty:

45% (medium)

Question Stats:

65% (02:53) correct 35% (03:22) wrong based on 39 sessions

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Renee can mow a lawn in 2 hours, and Jeremy can mow the same lawn in 1 hour and 15 minutes. If Renee starts mowing the lawn at 2:00 P.M., and Jeremy starts helping her at 2:30 P.M., at what time will they finish mowing the lawn, rounded to the nearest minute?

A. 2:35 P.M.
B. 2:50 P.M.
C. 3:05 P.M.
D. 3:25 P.M.
E. 3:55 P.M.

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Re: Renee can mow a lawn in 2 hours, and Jeremy can mow the same lawn in  [#permalink]

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26 Nov 2019, 00:48
1
Rate of Renee= 1/120
Rate of J = 1/75
so in 30 mins Renee does ; 30 * 1/120 ; 1/4 work
left 3/4 = time * ( 1/120 + 1/75)
x= ~ 35 mins
time taken to complete = 3: 05 PM
IMO C

Bunuel wrote:
Renee can mow a lawn in 2 hours, and Jeremy can mow the same lawn in 1 hour and 15 minutes. If Renee starts mowing the lawn at 2:00 P.M., and Jeremy starts helping her at 2:30 P.M., at what time will they finish mowing the lawn, rounded to the nearest minute?

A. 2:35 P.M.
B. 2:50 P.M.
C. 3:05 P.M.
D. 3:25 P.M.
E. 3:55 P.M.

Are You Up For the Challenge: 700 Level Questions
Re: Renee can mow a lawn in 2 hours, and Jeremy can mow the same lawn in   [#permalink] 26 Nov 2019, 00:48
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