Flower shop 2

Jenna went to a flower shop. The flower shop has a sign that shows the cost of the flowers at the shop:
rose 0.75
carnation 0.90
lily 1.40
Jenna bought 2 lillies 3 carnations and 5 roses. If she paid 20 to the shop owner how much change did she get?

Final Answer:

x =  10.75

Step-by-step explanation:

$$\begin{gathered} a=2\cdot 1.40+3\cdot 0.90+5\cdot 0.75=9.25\text{USD} \\ x=20-a=20-9.25=10.75 \end{gathered}$$

Try another example