Question

A random survey of 9th and 12th grade students was taken regarding the type of drink they liked to order at their local coffee shop. The results are in the table below.
Specialty hot drink Specialty cold drink Totals
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9th graders 90 210 300
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12th graders 313 137 450
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Totals 403 347 750
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The percentage of voters in the survey who answered that they are both 12th graders and like to order specialty cold drinks is p%. What is the value of p rounded to the nearest percent?

A.) 39%

B.) 42%

C.) 65%

D.) 18%

Answer 1

The table is shown below in the attached picture.

The grand total is the bottom rightmost cell, yellow in color.

12th graders AND likes specialty cold drinks is the cell colored green.

These 137 people are p% of the total. To get the value of p, we will divide this number (137) by grand total (750) and multiply by 100 to get the value.

$\frac{137}{750} =0.183=18.3$%.

Rounded to the nearest percent, it is 18%. Answer choice D is correct.

ANSWER: D