The fuel economy in miles per gallon (mpg) of a vehicle varies inversely with its horsepower. A 1974 Dodge Dart, with horsepower of 105 gets around 22 mpg on the highway. What would the fuel economy be for a 1984  Dodge Omni with a horsepower of 77?

The force needed to break a board varies inversely with its length. If Tom uses 20 pounds of pressure to break a 1 .5-foot long board, how many pounds of pressure would he need to use to break a 6 foot long board?

One serving of rice cereal has 190 mg of sodium, which is 8% of the recommended daily amount. What is the totalrecommended daily amount of sodium?

A 16-ounee chocolate mocha coffee with whipped cream contains 470 calories, 18 grams of fat, 63 grams of carbohydrates, and 15 grams of protein. Find the unit rate of (a) calories per ounce (b) grams of fat per ounce (c) grams of carbohydrates per ounce (d) grams of protein per ounce.