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Ginger over the course of an average work-week wanted to see how much she spent on lunch daily. On Monday and Thursday,

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by Gmat_mission » Wed Mar 24, 2021 8:13 am

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Ginger over the course of an average work-week wanted to see how much she spent on lunch daily. On Monday and Thursday, she spent $5.43 total. On Tuesday and Wednesday, she spent $3.54 on each day. On Friday, she spent $7.89 on lunch. What was her average daily cost?

a. $3.19
b. $3.75
c. $3.90
d. $4.08
e. $4.23

Answer: D

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Re: Ginger over the course of an average work-week wanted to see how much she spent on lunch daily. On Monday and Thursd

by Scott@TargetTestPrep » Wed Mar 31, 2021 8:26 am
Gmat_mission wrote: ↑
Wed Mar 24, 2021 8:13 am
 Ginger over the course of an average work-week wanted to see how much she spent on lunch daily. On Monday and Thursday, she spent $5.43 total. On Tuesday and Wednesday, she spent $3.54 on each day. On Friday, she spent $7.89 on lunch. What was her average daily cost?

a. $3.19
b. $3.75
c. $3.90
d. $4.08
e. $4.23

Answer: D

Solution:

The total she spent on lunch for the 5 days is:

5.43 + 3.54 x 2 + 7.89 = $20.40

Therefore, the average amount of money she spent on lunch per day is:

20.40/5 = $4.08

Answer: D

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Re: Ginger over the course of an average work-week wanted to see how much she spent on lunch daily. On Monday and Thursd

by Brent@GMATPrepNow » Thu Apr 01, 2021 8:48 am
Gmat_mission wrote: ↑
Wed Mar 24, 2021 8:13 am
 Ginger over the course of an average work-week wanted to see how much she spent on lunch daily. On Monday and Thursday, she spent $5.43 total. On Tuesday and Wednesday, she spent $3.54 on each day. On Friday, she spent $7.89 on lunch. What was her average daily cost?

a. $3.19
b. $3.75
c. $3.90
d. $4.08
e. $4.23

Answer: D

Source: GMAT Prep
On Monday and Thursday, she spent $5.43 TOTAL
So, our running total = $5.43

On Tuesday and Wednesday, she spent $3.54 on each day
Running total = $5.43 + $3.54 + $3.54

On Friday, she spent $7.89 on lunch.
Running total = $5.43 + $3.54 + $3.54 + $7.89 = $20.40

What was her average daily cost?
The average cost over the 5 days = (total amount spent)/5
= $20.40/5
= $4.08

Answer: D
Brent Hanneson - Creator of GMATPrepNow.com
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