A three-pack

A three-pack of bar soap has a wholesale cost of $1.15. A pharmacy wants to sell this product with a markup of 60%. What are the amounts of the markup and the retail price of a pack of soap?

A. markup: $0.69; retail price: $1.84
B. markup: $0.69; retail price: $2.84
C. markup: $1.69; retail price: $2.84
D. markup: $1.15; retail price: $2.30

Final Answer:

m =  0.69 USD
r =  1.84 USD

Step-by-step explanation:

$$\begin{gathered} a=1.15\text{USD} \\ k=100\%+60\%=1+\frac{60}{100}=1.6 \\ r=k\cdot a=1.6\cdot 1.15=\frac{46}{25}=1.84\text{USD} \\ m=r-a=1.84-1.15=0.69\text{USD} \end{gathered}$$

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