ANSWER:
One cup of cornstarch weighs 4.5 ounces.The cost of 1 cup is $0.286 approximately.
SOLUTION:
Given, One cup of cornstarch weighs 4.5 ounces.
The price of cornstarch was $0.98 per pound.
We need to find 1 cup cost.
Cost of a cup is product of cornstarch weight in cup and price of cornstarch per pound.
1 cup cost = cornstarch weight [tex]\times[/tex] price of cornstarch per pound.
Here, both the terms are in different units, we need to convert them into single unit.
Let us convert ounces into pounds
We know that, 1 pound = 16 ounces
1 ounce = [tex]\frac{1}{16}[/tex] pound
Now, one cup of cornstarch weighs 4.5 ounces
Then, cup of cornstarch weight in pounds = [tex]4.5 \times \frac{1}{16}[/tex]
= [tex]\frac{4.5}{16}[/tex]
= 0.28125 pounds
Now, cost of 1 cup = cornstarch weight x price of cornstarch per pound
= 0.28125 x 0.98
= 0.275625
Hence, the cost of 1 cup is $0.286 approximately