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?
A. 20t + 3 < 60
B. 20t − 3 ≤ 60
C. 20t + 3 ≥ 60
D. 20t + 3 ≤ 60
Katlyn takes 1 minute to tie her shoes and 2 minutes to check the route on her phone, so she spends 3 minutes preparing before each trip.
To calculate the number of trips she can make in 60 minutes, we can divide the total time available (60 minutes) by the sum of the time for each trip and the preparation time (20 minutes + 3 minutes = 23 minutes): 60 minutes / 23 minutes/trip ≈ 2.61 trips.
Since Katlyn cannot make a fraction of a trip, the maximum number of trips she can make is 2.
Therefore, the correct answer is None of the above.
One of them is correct
Apologies for the mistake. Let's re-evaluate the options:
Katlyn takes 20 minutes to walk from her house to the supermarket and back. In addition, she takes 1 minute to tie her shoes and 2 minutes to check the route on her phone. So the total time taken for each trip is 20 + 1 + 2 = 23 minutes.
Now let's determine the maximum number of trips Katlyn can take in 60 minutes:
60 minutes / 23 minutes/trip ≈ 2.61 trips
Since she cannot take a fraction of a trip, the maximum number of trips she can take is 2.
Therefore, the correct answer is A. 20t + 3 < 60.