Hai take 12 minutes to walk to school. He wants to get there.15 mins early to meet with his lab partner. What time shod he leave his house is school starts at 8:10 am?
12 + 15 = 27
8:10 = 7:70
7:70 - :27 = 7:43
To determine what time Hai should leave his house, we need to subtract the total walking time and the desired early arrival time from the school start time.
First, let's calculate the total time needed for walking plus the desired early arrival time. Hai takes 12 minutes to walk to school, and he wants to arrive 15 minutes early. So, the total time needed is 12 minutes (walking time) + 15 minutes (early arrival time) = 27 minutes.
Now, subtract these 27 minutes from the school start time of 8:10 am:
8:10 am - 27 minutes = 7:43 am.
Therefore, Hai should leave his house at 7:43 am in order to arrive at school 15 minutes early for his lab partner.