Fay makes necklaces to sell at a craft fairs she can make 18 necklaces in for 12 days. in simplest terms, at what rate does she make necklaces?

(18 neclaces)/(12 days) = 1.5 necklaces/day


Rate is generally expressed in terms of quantity per time period. ("Per" means "divided by" here.) So, to find the rate, you divide the quantity by the corresponding time period, as above. There are other sorts of rates, but this is perhaps the most common.