A lesson starts at 10.45 and lasts 40 minutes. What time does it end

Question

im commfused

 

Answer 1

there are 60 minutes in an hour, and we are 15 minutes away from the next, so we have to subtract that from the lesson time:

40 - 15 = 25

So we go from the 10 o'clock to the 11 o'clock once 15 minute pass, and we still have another 25 minutes left over:

11:00 + 25 minutes = 11:25

 

Think of it this way, the tens column doesn't reset to 0 when you go past 9, but go past 5 instead. Instead of going 197, 198, 199, 200, what happens is we have 1:57, 1:58, 1:59, 2:00

Answer 2

10:45 + 0:40

10:45 + 0:15 + 0:25

11:00 + 0:25

11:25