A regular tube of toothpaste costs $2.50 for 3.2 ounces. A travel size tube costs $1.00 for 1.2 ounces. Compare the prices and weights using percent to decide which is the better buy.
Accepted Solution
A:
Answer:The regular size is more economical.Step-by-step explanation:Consider the provided information.A regular tube of toothpaste costs $2.50 for 3.2 ounces.Find out the unit rate as shown below:[tex]\frac{\$2.50}{3.2}=\$0.78[/tex]Therefore, the cost of one ounce is $0.78.A travel size tube costs $1.00 for 1.2 ounces. Find out the unit rate as shown below:[tex]\frac{\$1}{1.2}=\$0.833[/tex]Therefore, the cost of one ounce is $0.833.From the above calculation we can observe that regular tube toothpaste price is better buy.Now find the percent as shown:Firs find the difference $0.83-$0.78 = $0.05Therefore, [tex]\frac{0.05}{0.78}\times 100\approx 6.41[/tex]Hence, regular tube is 6.41% less costly as compare to travel size.