Problem
Dianelys owns a small business selling icecream. She knows that in the last week 14 customers paid cash, 121 customers used a debit card, and 3 customers used a credit card. If next week, she is expecting 1100 customers, about how many would you expect to pay with cash? Round your answer to the nearest whole number.
Solution
Step 1 ：\( \text{Total customers last week} = 14 + 121 + 3 = 138\)
Step 2 ：\( \text{Cash payment probability} = \frac{14}{138} = \frac{7}{69} \)
Step 3 ：\( \text{Expected cash customers next week} = \frac{7}{69} \times 1100 \approx 111 \)
