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While a family was away on vacation, they paid a neighborhood boy $11

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While a family was away on vacation, they paid a neighborhood boy $11  [#permalink]

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New post 23 Jun 2018, 00:21
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Question Stats:

92% (00:42) correct 8% (00:31) wrong based on 231 sessions

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While a family was away on vacation, they paid a neighborhood boy $11 per week to mow their lawn and $4 per day to feed and walk their dog. If the family was away for exactly 3 weeks, how much did they pay the boy for his services?


A. $45

B. $54

C. $71

D. $95

E. $117



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(PS05001)

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Re: While a family was away on vacation, they paid a neighborhood boy $11  [#permalink]

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New post 23 Jun 2018, 00:36
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Bunuel wrote:
While a family was away on vacation, they paid a neighborhood boy $11 per week to mow their lawn and $4 per day to feed and walk their dog. If the family was away for exactly 3 weeks, how much did they pay the boy for his services?


A. $45

B. $54

C. $71

D. $95

E. $117



NEW question from GMAT® Official Guide 2019


(PS05001)



Let's work on each week..
To mow the lawn - 11$
To feed dog - 4$ per day so 4*7$=28$
Total for one week =11+28=39$

So for 3 weeks 39*3=117

E
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While a family was away on vacation, they paid a neighborhood boy $11  [#permalink]

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New post 23 Jun 2018, 01:18
I believe the moment you start calculating the exact figure boy would receive, you fall for a trap and lose some time. Instead, for questions like this, I'd suggest eliminate all options which don't fit the criterion.

Since the boy is entitled to $84 ($4*3*7), just for feeding and walking the dog, go ahead and mark the option greater than $100, which is only one choice. That being said, this method should be used with caution.
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Re: While a family was away on vacation, they paid a neighborhood boy $11  [#permalink]

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New post 23 Jun 2018, 03:48
Bunuel wrote:
While a family was away on vacation, they paid a neighborhood boy $11 per week to mow their lawn and $4 per day to feed and walk their dog. If the family was away for exactly 3 weeks, how much did they pay the boy for his services?


A. $45

B. $54

C. $71

D. $95

E. $117



NEW question from GMAT® Official Guide 2019


(PS05001)




Note:

1. Family paid $11 per week to mow their lawn.
2. Family paid $4 per day to feed their cows.

Requirement:
To find out the total cost of the family during 3 weeks trips .

Calculation:

3*11 = 33
21*4 = 84

(33+84) = $117

Thus the best option is E.
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Re: While a family was away on vacation, they paid a neighborhood boy $11  [#permalink]

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New post 23 Jun 2018, 06:04
Top Contributor
Bunuel wrote:
While a family was away on vacation, they paid a neighborhood boy $11 per week to mow their lawn and $4 per day to feed and walk their dog. If the family was away for exactly 3 weeks, how much did they pay the boy for his services?


A. $45

B. $54

C. $71

D. $95

E. $117



..... paid a neighborhood boy $11 per week to mow their lawn...
So, in 3 weeks, the amount the family paid for lawn-moving = (3 weeks)($11/week) = $33

...the family paid $4 per DAY to feed and walk their dog...
3 weeks = 21 DAYS
So, the amount the family paid for dog care = (21 days)($4/day) = $84

TOTAL amount paid = $33 + $84 = $117

Answer: E

Cheers,
Brent
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Re: While a family was away on vacation, they paid a neighborhood boy $11  [#permalink]

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New post 27 Jun 2018, 18:08
Bunuel wrote:
While a family was away on vacation, they paid a neighborhood boy $11 per week to mow their lawn and $4 per day to feed and walk their dog. If the family was away for exactly 3 weeks, how much did they pay the boy for his services?


A. $45

B. $54

C. $71

D. $95

E. $117



The family paid:

11 x 3 + 4 x 21 = 33 + 84 = 117 dollars.

Answer: E
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Re: While a family was away on vacation, they paid a neighborhood boy $11 &nbs [#permalink] 27 Jun 2018, 18:08
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