Respuesta :
Answer:
Size C can is the best buy.
Step-by-step explanation:
The given question is incomplete; here is the complete question.
One brand of canned salmon is sold in four different sizes.
Size A The 7 1/5 -ounce can costs $3.49.
Size B The 16 1/2 -ounce can costs $6.49.
Size C The 24 3/4 -ounce can costs $8.49.
Size D The 30 2/3 -ounce can costs $10.99. What is the unit rate for each size to the nearest cent? If the cost is less than a dollar, put a zero to the left of the decimal point.
Size Unit rate
A (Blank)
B (Blank)
C (Blank)
D (Blank)
What size is best to buy? explain how you know.
For Size A - [tex]7\frac{1}{5}[/tex] ounce or [tex]\frac{36}{5}[/tex] ounce can costs $3.49
Therefore, per ounce cost = [tex]\frac{\text{Total cost}}{\text{Size of can}}[/tex]
= [tex]\frac{3.49}{\frac{36}{5}}[/tex]
= [tex]\frac{3.49\times 5}{36}[/tex]
= $0.48
For Size B - [tex]16\frac{1}{2}[/tex] or [tex]\frac{33}{2}[/tex] ounce can costs $6.49
Per ounce cost = [tex]\frac{6.49}{\frac{33}{2}}[/tex]
= [tex]\frac{6.49\times 2}{33}[/tex]
= 0.39
For size C - [tex]24\frac{3}{4}[/tex] ounce or [tex]\frac{99}{4}[/tex] ounce can costs $8.49
Per ounce cost = [tex]\frac{8.49}{\frac{99}{4}}[/tex]
= [tex]\frac{8.49\times 4}{99}[/tex]
= $0.34
For size D - [tex]30\frac{2}{3}[/tex] or [tex]\frac{92}{3}[/tex] ounce can for $10.99
Per ounce cost = [tex]\frac{10.99}{\frac{92}{3} }[/tex]
= [tex]\frac{10.99\times 3}{92}[/tex]
= $0.36
For size C, per ounce cost of the can is the least. Therefore, size C can is the best buy.
