Question

Test Practice

9. Kim and her two brothers each use
1 cups of milk
for breakfast. How many fluid ounces of milk do they
use in 4 days?
A 144 fl oz
B 108 fl oz.
C 72 fl oz
D 36 fl oz

Answer 1

Explanation:

There are three people who each use 1 cup of milk for breakfast. That's a total of 3 cups, just for breakfast. There is no information given on any other milk consumption, so we have to assume that is all the milk they drink in a day.

Over a 4 day period, that amounts to (4 days)*(3 cups/day) = 12 cups of milk in 4 days.

1 cup of milk is equal to 8 fluid ounces. We can make this into a conversion factor:

(8 fluid oz)/(1 cup)

Since the top is equal to the bottom (8 oz = 1 cup), this numerically is equivalent to 1, which we can multiply by anything.

Let's multiply it times the 12 cups of milk the three consume in 4 days:

(12 cups/4 days)*(8 fluid oz/cup)

Note that the cups cancel and we are left with the unit fluid oz/4 days.

96 fluid oz over 3 days. I don't see that as an option, so please check the numbers.