Question

Mary bought 3 hamburgers and 2 sodas for 7.50. a soda costs 0.75. tax included in the prices. what is the cost of one hamburger? (this is a practice question)

Answer 1

The cost of one hamburger is $2

Here, we want to get the cost of one hamburger

Let the cost of the hamburger be h and the cost of the soda be s

$\begin{gathered} 3h\text{ + 2s = 7.5} \\ \text{but s = \ 0.75} \\ 3h\text{ + 2(0.75) = 7.5} \\ 3h\text{ + 1.5 = 7.5} \\ 3h\text{ = 7.5-1.5} \\ 3h\text{ = 6} \\ h\text{ = }\frac{6}{3} \\ h\text{ = \ 2} \end{gathered}$