Answer: 7 customers (or 7.5).
Step-by-step explanation:
We can create and solve a proportion to find how many customers he can ring up in 30 minutes.
[tex]\dfrac{2}{8\;min} =\dfrac{x}{30\;min}[/tex]
Cross multiply.
8 * x = 2 * 30
8x = 60
Divide both sides of the equation by 8.
x = 7.5
We will round down, since you cannot have half of a customer. This gives us our answer, he can ring up 7 customers in 30 minutes.
