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Find an equivalent ratio so that the denominator = 1. This may require the numerator to be a fraction.
Well a unit rate is a rate of per one. So if say you get 4 cookies per two packets. The unit rate would be 2 cookies per packet or 2 cookies/packet
A unit rate is the rate or price for one of something that is normally available in dozens, hundreds, gross lots, thousands, crates, truckloads, etc.