It can be rounded off as 75.3 or simply 75.
30% off 298 = 298 - (0.30 x 298) = 208.6
30% off of 298= 30% discount applied to 298= 298 - (30% * 298)= 298 - (89.40)= 208.60
75
298 and 302 both round to 300.
Rounding to the nearest 25, you would round to 75.
296, 297, 298, 299
Assuming a constant average speed of 75 miles per hour, this would take 298/75 = 3.973 recurring (that is, 3.973333...) hours or 238.4 minutes (that is, 3 hours 58.4 minutes or 3 hours 58 minutes 24 seconds).
300
75 rounds to 80
30 percent off 75 = 52.530% off of 75= 30% discount applied to 75= 75 - (30% * 75)= 75 - (0.30 * 75)= 75 - 22.5= 52.5
75% off of 75 = 25% left of 75 = 75*25/100 = 18.75
30 - 75% = 30 x (1 - (75/100)) = 30 x 0.25 = 7.5. If the number refers to a unit of currency, don't forget to round to the appropriate number of decimal places.