SOLUTION
From the question, the total customers that bought items are
![65+26+8=99](https://img.qammunity.org/2023/formulas/mathematics/college/s0fsabgbad50pmids7m6qdi74cjcdh28ui.png)
Number of customers that used credit card last week was 8
In the next week, number of customers that would use credit card becomes
![\begin{gathered} (8)/(99)*600 \\ =48.4848 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/wb3ulyqad4de4uhrvq1uu75vkmqhkmt8en.png)
Hence the answer is 48 to the nearest whole number