Answer:
180 customers
Step-by-step explanation:
First, we need to get the total of customers. The total needed is the total of customers who bought gas at a gas station. We're going to assume that the 250 customers who bought gas is the total since:
a) The only store mentioned here is the gas station.
b) They haven't mentioned any other time-periods than Wednesday.
Using this, we do the math:
72% of total customers made additional purchases = 0.72
0.72 * 250 total customers = 180 customers who made additional purchase