Problem 8 · Find the rate first · 5 points
Made by AI and not reviewed by a real person.
Three ducks lay 3 eggs in 3 days (laying evenly the whole time). How many eggs do 6 ducks lay in 6 days?
- 3
- 12
- 9
- 6
- 18
Show a hint
- First: how many eggs do 3 ducks lay in ONE day?
- Doubling the ducks doubles the eggs. Doubling the days doubles them again.
Show the answer and solution
Answer: B — 12
Three ducks lay 1 egg per day (3 eggs ÷ 3 days). Twice the ducks → 2 eggs per day. Over 6 days: 2 × 6 = 12 eggs. The trap answer "6" doubles only once. Reducing to a rate ("per day") first makes double-scaling problems easy — the same reasoning powers physics and SAT rate problems later.