Question

Peyton owns a small business selling used books. She knows that in the last week 19

customers paid cash, 25 customers used a debit card, and 24 customers used a credit
card.
Based on these results, express the probability that the next customer will pay with a
debit card or a credit card as a decimal to the nearest hundredth.

Answer 1

0.72

Explanation:

Based on the given conditions, formulate: (24+25) ÷ (24+19+25)

Calculate the sum or difference: 49

--------------------------

24 + 19 + 25

Calculate the sum or difference: 49

-----

68

Then, round 49/68, which would give you 0.72

Answer 2

To calculate the probability that the next customer will pay with a debit card or a credit card, we first need to find the total number of customers from the last week:

Total customers = 19 (cash) + 25 (debit card) + 24 (credit card) = 68 customers

Now, we'll find the total number of customers who paid with a debit card or a credit card:

Debit card or credit card customers = 25 (debit card) + 24 (credit card) = 49 customers

Next, we'll calculate the probability that the next customer will pay with a debit card or a credit card by dividing the number of debit card or credit card customers by the total number of customers:

Probability = 49 (debit card or credit card customers) / 68 (total customers) ≈ 0.720588

Rounding to the nearest hundredth, the probability is approximately 0.72, or 72%.