An owner of a small store knows that in the last week 54 customers paid with cash, 42 paid with a debit card, and 153 paid with credit card. based on the number of customers from last week, which fraction is closest to the probability that the customer will pay with cash

54 customers paid with cash
42 paid with debit card
153 paid with credit card

Add them up to find the total amount of people:

54 + 42 + 153 = 249

Now write 54(the number of customers who paid with cash) as a fraction over the total, 249.

54/249

So the probability that customers will pay cash is 54/249 or 18/83