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# Helpers are needed to prepare for the fete. Each helper can make eithe

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Math Expert
Joined: 02 Sep 2009
Posts: 62496
Helpers are needed to prepare for the fete. Each helper can make eithe  [#permalink]

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22 May 2016, 12:45
00:00

Difficulty:

35% (medium)

Question Stats:

73% (02:30) correct 27% (02:29) wrong based on 70 sessions

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Helpers are needed to prepare for the fete. Each helper can make either 2 large cakes per hour, or 35 small cakes per hour. The kitchen is available for 3 hours and 20 large cakes and 700 small cakes are needed. How many helpers are required?

A. 10
B. 15
C. 20
D. 25
E. 30

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Math Expert
Joined: 02 Aug 2009
Posts: 8301
Re: Helpers are needed to prepare for the fete. Each helper can make eithe  [#permalink]

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22 May 2016, 19:53
Bunuel wrote:
Helpers are needed to prepare for the fete. Each helper can make either 2 large cakes per hour, or 35 small cakes per hour. The kitchen is available for 3 hours and 20 large cakes and 700 small cakes are needed. How many helpers are required?

A. 10
B. 15
C. 20
D. 25
E. 30

For solving this Q, lets see how many helper-hour are required..
$$\frac{20}{2} + \frac{700}{35} = 10 + 20 = 30$$...
so 30 helper-hour in 3hours, so # of helpers = $$\frac{30}{3}= 10$$
A
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Re: Helpers are needed to prepare for the fete. Each helper can make eithe   [#permalink] 22 May 2016, 19:53
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