Bunuel 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%

Kudos for correct solution.

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 =

36So,

36 people ordered the daily special on MONDAY

On Tuesday, only 10 percent of the 120 customers ordered the special. 10% of 120 =

12So,

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 =

300So 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 – Founder of gmatprepnow.com