To find out the time it takes to cover a distance of 280 meters at speeds of 150 m/min and 80 m/min, we can use the formula:

Time = Distance / Speed

For V1 = 150 m/min:
Time for V1 = 280 / 150 = 1.87 minutes

For V2 = 80 m/min:
Time for V2 = 280 / 80 = 3.5 minutes

Therefore, it would take 1.87 minutes to cover a distance of 280 meters at a speed of 150 m/min, and 3.5 minutes to cover the same distance at a speed of 80 m/min.