Q4: A recipe calls for 3 cups of cornstarch. One cup of cornstarch weighs 4.5 ounces. How
much would 1 cup cost if the price of cornstarch was $0.98 per pound?​

Respuesta :

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