Question

A restaurant served 80 entrees during dinner. Of the 80 entrees, 24 were fish. The restaurant serves about 720 dinner entrees in a week. About how many of these 720 dinner entrees should the manager expect to be fish?

A.
56
B.
104
C.
192
D.
216

Answer 1

D. 216

Explanation:

Entrees : fish

80 : 24

720 : X

X/720 = 24/80

X = 720 × 24/80

X = 216

Answer 2

D

Explanation:

We can set up a proportion because the "expected" amount should correspond to the sample amount.

`(24)/(80) =(x)/(720)`, where x is the number of dinner entrees that are fish

Cross-multiply:

80 * x = 24 * 720

80x = 17280

Divide both sides by 80:

x = 17280/80 = 216

The answer is D.

Hope this helps!