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While a family was away on vacation, they paid

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While a family was away on vacation, they paid

by Gmat_mission » Sat Apr 06, 2019 4:40 am

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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

[spoiler]OA=A[/spoiler]

Source: Official Guide
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by Brent@GMATPrepNow » Sat Apr 06, 2019 7:01 am
Gmat_mission 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

[spoiler]OA=A[/spoiler]

Source: Official Guide
..... 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
Brent Hanneson - Creator of GMATPrepNow.com
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by swerve » Sat Apr 06, 2019 9:48 am
Notice that

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.

\(3*11 = 33\)
\(21*4 = 84\)

\((33+84) = \$117\)

Hence, __E__ is the correct answer.
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