Respuesta :

nilbert
Method 1:

Subtract 2:30 directly from 2:58. 

2:58 - 2:30 = 0:28

Method 2:

Round 2:58 to 3:00, subtract 2:30 from 3:00, and subtract 2 (2:58 + 2 = 3:00)

2:58 is approximately 3:00

3:00 - 2:30 = 30 min

30 min - 2 min = 28 min

Hope this helps!