Question
A whale swims 200 miles in 5 days. Identify which equation could NOT be used to find how many miles it swims in 16 days. Show how to solve the problem first.
Answer choices: A: y = 40x 16
B: y = (200/5) x 16
C: y = 40+ 16
Describe as a 7th grader short enough to fit in a small text box.
Answers
GPT-4o mini
To find out how many miles the whale swims in 16 days, we first calculate how many miles it swims in one day.
The whale swims 200 miles in 5 days, so:
1. **Find miles per day**:
200 miles ÷ 5 days = 40 miles per day.
2. **Find total for 16 days**:
40 miles/day × 16 days = 640 miles.
Now, let's look at the equations:
A: y = 40 × 16 (This works because it uses the daily distance).
B: y = (200/5) × 16 (This works too because it calculates miles per day first).
C: y = 40 + 16 (This does NOT work because it adds instead of multiplying).
So, the equation that could NOT be used is C: y = 40 + 16.
The whale swims 200 miles in 5 days, so:
1. **Find miles per day**:
200 miles ÷ 5 days = 40 miles per day.
2. **Find total for 16 days**:
40 miles/day × 16 days = 640 miles.
Now, let's look at the equations:
A: y = 40 × 16 (This works because it uses the daily distance).
B: y = (200/5) × 16 (This works too because it calculates miles per day first).
C: y = 40 + 16 (This does NOT work because it adds instead of multiplying).
So, the equation that could NOT be used is C: y = 40 + 16.