Saving time is one of the most significant advantages that come with a riding mower. However, not all riding mowers can give you the same time. If you are using a 36 inches cutting deck, it will take on an average an hour to now an acre of land, whereas if the cutting deck is 48 inches, it could do the same in as less as 45 minutes. If you try the same using push mowers, it takes a whopping two hours for it to mow an acre of land.