Question

Choose an amount between $50.00 and $60.00 to represent the cost of a meal for a family. Be sure to include dollars and cents.

Part A: If the family has a 20%-off coupon, calculate the new price of the meal. Show all work or explain your steps. (2 points)

Part B: Calculate a 15% tip using the new price. What is the final cost of the meal? Show all work or explain your steps. (2 points)

Answer 1

so let's pick in between, say the family had a meal and it cost $55.

A)

Let's apply the 20% off a coupon to the 55 bucks

`\begin{array} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{20\% of 55}}{\left( \cfrac{20}{100} \right)55}\implies 11`

so the new price is 55 - 11 = 44 bucks.

B)

now, since the meal was terrific, it had garlic bread and salsa, so let's make it a 15% of 44 for the tip.

`\begin{array} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{15\% of 44}}{\left( \cfrac{15}{100} \right)44}\implies 6.6\hspace{5em}\underset{ \textit{final price} }{\stackrel{ 44~~ + ~~6.6 }{\text{\LARGE \$50.60}}}`

Answer 2

shelley is searching online for airline tickets. Two weeks​ ago, the cost to fly from Hartford to Boston was ​$.200 Now the cost is ​$.315 What is the percent​ increase? What would be the percent increase if the airline charges an additional​ $50 baggage fee with the new ticket