Final answer:
To solve the ratio problem, divide 12 by 3 to see how many times the ratio fits, then multiply the result by 4 to find out that the friend sells 16 tickets.
Step-by-step explanation:
The question involves solving a ratio problem. Given that for every 3 tickets you sell, your friend sells 4 tickets and that you sell a total of 12 tickets, we can use a ratio table to determine how many tickets your friend sells.
The ratio between the number of tickets you sell and your friend sells is 3:4. Since you sell 12 tickets, we need to find out how many times 3 goes into 12 to scale up the ratio accordingly.
Step 1: Divide 12 by 3 to find out how many times the original ratio fits into the amount you've sold. 12 ÷ 3 = 4.
Step 2: Multiply the number your friend sells (4) in the original ratio by the result from step 1. 4 × 4 = 16. This means your friend has sold 16 tickets.