Given:
Susan's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Susan $5.45 per pound, and type B coffe costs $4.05 per pound. This month's blend used three times as many pounds of type B coffee as type A, for a total cost of $633.60.
Required:
We need to find that how many pounds of type A coffee were used
Step-by-step explanation:
Let
a is pound of A coffee used
b is pound of B coffee used
By given statement
![b=3a](https://img.qammunity.org/2023/formulas/mathematics/college/qex4r31yac97j0c93jifal8xmog4sccpf3.png)
and also
![5.45a+4.05b=633.6](https://img.qammunity.org/2023/formulas/mathematics/college/3krd4f52shc201tlq0u8peoi4qbqmb5log.png)
from both equation
![\begin{gathered} 5.45a+12.15a=633.6 \\ 17.6a=633.6 \\ a=36 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/c82ome6ww29v54vh4og4rt760ig2iaeatm.png)
Final answer:
36