Question

Autumn owns a small business selling ice-cream. She knows that in the last week 108 customers paid cash, 8 customers used a debit card, and 4 customers used a credit card.

If next week, she is expecting 1800 customers, about how many would you expect to pay with a debit card? Round your answer to the nearest whole number.

Answer 1

Answer:120

Explanation:

108=c (cash)

8=d (debit)

4=e (credit)

c+d+e=120

If next week, she is expecting 1800 customers we have to do:

1800 divided by 120 = 15

so now we do d (8) multiplied by 15, which is 120

Answer 2

We can use the proportion:

(number of customers paying with debit card) / (total number of customers) = (number of customers paying with debit card in the last week) / (total number of customers in the last week)

Let x be the number of customers who will pay with a debit card in the coming week. Then, we have:

x / 1800 = 8 / (108 + 8 + 4)

Simplifying and solving for x, we get:

x = (8 / 120) * 1800
x = 120

Therefore, we can expect about 120 customers to pay with a debit card next week. Rounded to the nearest whole number, the answer is 120