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On a Monday in a certain restaurant, 20 percent of the 180

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by BTGmoderatorDC » Mon Aug 19, 2019 4:27 pm

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On a Monday in a certain restaurant, 20 percent of the 180 customers ordered the daily special. On Tuesday, only 10 percent of the 120 customers ordered the special. For the two days combined, what percent of the customers ordered the daily special?

A. 15%
B. 16%
C. 18%
D. 23%
E. 30%

OA B

Source: Veritas Prep
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by Jay@ManhattanReview » Mon Aug 19, 2019 7:57 pm
BTGmoderatorDC wrote:On a Monday in a certain restaurant, 20 percent of the 180 customers ordered the daily special. On Tuesday, only 10 percent of the 120 customers ordered the special. For the two days combined, what percent of the customers ordered the daily special?

A. 15%
B. 16%
C. 18%
D. 23%
E. 30%

OA B

Source: Veritas Prep
"¢ # of customers ordered special on Monday = 12% of 180 = 36;
"¢ # of customers ordered special on Tuesday = 10% of 120 = 12

Total # of customers who ordered special on both days = 36 + 12 = 48;
Total # of customers on both days = 180 + 120 = 300;

Percent of the customers ordered the daily special = (48/300)*100% = 16%

The correct answer: B

Hope this helps!

-Jay
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by Scott@TargetTestPrep » Sun Aug 25, 2019 5:30 pm
BTGmoderatorDC wrote:On a Monday in a certain restaurant, 20 percent of the 180 customers ordered the daily special. On Tuesday, only 10 percent of the 120 customers ordered the special. For the two days combined, what percent of the customers ordered the daily special?

A. 15%
B. 16%
C. 18%
D. 23%
E. 30%

OA B

Source: Veritas Prep
On the first day, 0.2 x 180 = 36 customers ordered the special.

On the second day, 0.1 x 120 = 12 ordered the special.

We combine the data for the two days. Thus, (36 + 12)/(180 + 120) = 48/300 = 0.16 = 16% of the customers ordered the special.

Answer: B

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by Brent@GMATPrepNow » Mon Aug 26, 2019 6:05 am
BTGmoderatorDC wrote:On a Monday in a certain restaurant, 20 percent of the 180 customers ordered the daily special. On Tuesday, only 10 percent of the 120 customers ordered the special. For the two days combined, what percent of the customers ordered the daily special?

A. 15%
B. 16%
C. 18%
D. 23%
E. 30%

OA B

Source: Veritas Prep
On a Monday in a certain restaurant, 20 percent of the 180 customers ordered the daily special.
10% of 180 = 18
So, 20% of 180 = 36
So, 36 people ordered the daily special on MONDAY

On Tuesday, only 10 percent of the 120 customers ordered the special.
10% of 120 = 12
So, 12 people ordered the daily special on TUESDAY

For the two days combined, what percent of the customers ordered the daily special?
TOTAL number of people who ordered the daily special = 36 + 12 = 48 people
TOTAL number of customers for the two days = 180 + 120 = 300

So 48/300 of the customers ordered the special.
Our job is to rewrite 48/300 as a PERCENT. Here's one approach:
Take: 48/300
Divide top and bottom by 3 to get the EQUIVALENT fraction 16/100
16/100 = 16%

Answer: B

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
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