Question

choose efficient methods in 5–8, determine which is the better value.

1. 1 pound of apples for $2.15 or 3 pounds of apples for $5.76
2. 8 bungee cords for $10.00 or 20 bungee cords for $22.00
3. 32 fluid ounces of juice for $7.04 or 20 fluid ounces of juice for $4.80
4. 5 ounces of insect repellant for $6.95 or 14 ounces of insect repellant for $19

Explanation:

Problem 5:

Step1: Calculate unit price for 1 pound

Unit price for 1 pound of apples is $\$2.15$ per pound.

Step2: Calculate unit price for 3 pounds

Unit price for 3 pounds of apples: $\frac{5.76}{3} = 1.92$ dollars per pound.

Step3: Compare the two unit prices

Since $1.92 < 2.15$, the 3 - pound option has a lower unit price.

Step1: Calculate unit price for 8 bungee cords

Unit price for 8 bungee cords: $\frac{10.00}{8}=1.25$ dollars per bungee cord.

Step2: Calculate unit price for 20 bungee cords

Unit price for 20 bungee cords: $\frac{22.00}{20} = 1.1$ dollars per bungee cord.

Step3: Compare the two unit prices

Since $1.1<1.25$, the 20 - bungee - cord option has a lower unit price.

Step1: Calculate unit price for 32 fluid ounces

Unit price for 32 fluid ounces of juice: $\frac{7.04}{32}=0.22$ dollars per fluid ounce.

Step2: Calculate unit price for 20 fluid ounces

Unit price for 20 fluid ounces of juice: $\frac{4.80}{20}=0.24$ dollars per fluid ounce.

Step3: Compare the two unit prices

Since $0.22 < 0.24$, the 32 - fluid - ounce option has a lower unit price.

Answer:

3 pounds of apples for $\$5.76$ is the better value.

Problem 6: