SOLUTION
From the question, the total customers that bought items are
[tex]65+26+8=99[/tex]Number of customers that used credit card last week was 8
In the next week, number of customers that would use credit card becomes
[tex]\begin{gathered} \frac{8}{99}\times600 \\ =48.4848 \end{gathered}[/tex]Hence the answer is 48 to the nearest whole number