To solve this inequality, we can simplify it by subtracting 3 from both sides of the equation:
20t ≤ 57
Now, we can divide both sides of the equation by 20 to solve for t:
t ≤ 57/20
Or,
t ≤ 2.85
Since we are looking for the number of trips Katlyn can take in 60 minutes, we need to find the largest whole number that is less than or equal to 2.85. The largest whole number that satisfies this condition is 2.
Therefore, Katlyn can take 2 trips to the supermarket and back in 60 minutes.
Katlyn takes 20 minutes to walk from her house to the supermarket and back. After stepping outside her house, she takes 1 minute to tie her shoes and 2 minutes to check the route on her phone. How many trips can she take to the supermarket and back in 60 minutes?
20t + 3 < 60
20t − 3 ≤ 60
20t + 3 ≥ 60
20t + 3 ≤ 60
1 answer