hai takes 12 minutes to walk to school. he wants to get there 15 minutes early to meet with his lab partner. what time should he leave his house if school starts at 8:10am?
time walking + time allowance to be early
= 12 min + 15 min
= 27 minutes
time he should leave
= 8:10 am - 0:27
= 7:43 am
check by adding 27 minutes to 8:10
To determine what time Hai should leave his house, we need to consider the time it takes for him to walk to school and the desired arrival time.
First, let's calculate the desired arrival time. Hai wants to get to school 15 minutes early, so we need to subtract 15 minutes from the school start time of 8:10 am.
8:10 am - 0 hours and 15 minutes = 7:55 am
Now that we have the desired arrival time, we can subtract the time it takes Hai to walk to school from that. Hai takes 12 minutes to walk to school, so we subtract 12 minutes from 7:55 am.
7:55 am - 0 hours and 12 minutes = 7:43 am
Therefore, Hai should leave his house at 7:43 am in order to arrive at school 15 minutes early and meet with his lab partner.