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Maria works 4 days per week and earns d dollars per day. Which of the
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Bunuel
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Maria works 4 days per week and earns d dollars per day. Which of the [#permalink] New post  14 Feb 2020, 03:45
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Maria works 4 days per week and earns d dollars per day. Which of the following represents the amount Maria earns at this job in w weeks?

(A) 4dw
(B) w/(4d)
(C) 4d/w
(D) 3w/d
(E) dw/4
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Re: Maria works 4 days per week and earns d dollars per day. Which of the [#permalink] New post  14 Feb 2020, 10:00
Bunuel wrote:
Maria works 4 days per week and earns d dollars per day. Which of the following represents the amount Maria earns at this job in w weeks?

(A) 4dw
(B) w/(4d)
(C) 4d/w
(D) 3w/d
(E) dw/4


money earned per week ; 4d and total weeks w
so total money earned ; 4dw
IMO A
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Re: Maria works 4 days per week and earns d dollars per day. Which of the [#permalink] New post  13 Sep 2020, 05:34
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Bunuel wrote:
Maria works 4 days per week and earns d dollars per day. Which of the following represents the amount Maria earns at this job in w weeks?

(A) 4dw
(B) w/(4d)
(C) 4d/w
(D) 3w/d
(E) dw/4


Given: Maria works 4 days per 1 week
So, the number of work days in w weeks = 4w

Given: Maria earns d dollars per day
So, in 4w days, the total amount she will earn = (d)(4w) = 4dw

Answer: A
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Re: Maria works 4 days per week and earns d dollars per day. Which of the [#permalink] New post  13 Sep 2020, 12:45
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Bunuel wrote:
Maria works 4 days per week and earns d dollars per day. Which of the following represents the amount Maria earns at this job in w weeks?

(A) 4dw
(B) w/(4d)
(C) 4d/w
(D) 3w/d
(E) dw/4


The conversions we are given are: \(4 \frac{days}{week}\) and \(d \frac{$}{day}\).

We can create a new conversion by multiplying the ones above, and we get: \(4d \frac{$}{week}\).

Finally, we have \(w\) weeks, so the natural thing to do is multiply the conversion above by that to get \(4dw\) in dollars.

Ans: A
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Re: Maria works 4 days per week and earns d dollars per day. Which of the [#permalink]
13 Sep 2020, 12:45
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