To solve this problem:

Given:

• Paul earns $125 every 3 days.
• We need to find his earnings after 15 days.

Step-by-Step Solution:

1. Determine how many 3-day periods are in 15 days: $\frac{15 \text{ days}}{3 \text{ days per period}} = 5 \text{ periods}$

2. Multiply the earnings per period by the number of periods: $125 \times 5 = 625$

Final Answer:

Paul will earn $625 after 15 days.

Would you like more detailed steps or explanations?

Related Questions:

1. How much does Paul earn per day?
2. How much will Paul earn in 30 days?
3. If Paul worked only half the time, how much would he earn?
4. How many days would it take for Paul to earn $1000?
5. What would happen if Paul's daily rate increased by 10%?

Tip:

To solve similar problems, find the unit rate first (in this case, earnings per day), then multiply by the total days.