(adsbygoogle = window.adsbygoogle || []).push({}); It is important that GED math students know how to determine cost using the cost formula c=nr. Cost formula total cost = (number of units ) x (price per unit) It is also important to be able to use this formula to determine the number of units or the price per unit. total cost / [...] . . . → Read More: How Much Will It Cost To Fix Driveway