Idil owns a small business selling clothing. She knows that in the last week 3 customers paid cash, 25 customers used a debit card, and 53 customers used a credit card.
Based on these results, express the probability that the next customer will pay with cash or a credit card as a percent to the nearest whole number.
To find the probability that the next customer will pay with either cash or a credit card, we need to add the number of customers who paid with cash (3) to the number of customers who paid with a credit card (53), and divide this by the total number of customers (3 + 25 + 53) = 81.
So the probability that the next customer will pay with cash or a credit card is (3 + 53) / 81 = 56 / 81.
To express this as a percent to the nearest whole number, we need to multiply the probability by 100 and round to the nearest whole number.
Therefore, the probability is (56 / 81) * 100 = 69.1 which rounds to 69%.
Therefore, the probability that the next customer will pay with cash or a credit card is 69%.