Nima can mow 18 yards in 6 days. Which strategy can be used to determine how many yards Nima can mow in 20 days?

Question

Add the difference in the days to the number of yards.
Subtract the difference in the days from the number of yards.
Find the number of yards per day by division, and then multiply that quotient by the number of days.
Find the number of yards per day by division, and then divide that quotient by the number of days.

Answer 1

To determine how many yards Nima can mow in 20 days, the most effective strategy is to find the number of yards per day by division, and then multiply that quotient by the number of days.

Here’s how you can do it step-by-step:

1. Calculate the yards per day Nima can mow: \[ \text{Yards per day} = \frac{18 \text{ yards}}{6 \text{ days}} = 3 \text{ yards/day} \]

2. Then, multiply the yards per day by the number of days (20 days): \[ \text{Total yards in 20 days} = 3 \text{ yards/day} \times 20 \text{ days} = 60 \text{ yards} \]

Therefore, the correct strategy is the third option: Find the number of yards per day by division, and then multiply that quotient by the number of days.