40% of a farmer's cattle are males. The rest are females. If a female cow produces 2 gallons of milk a day, how much milk will the farmer get a day if he has 50 male cows?
The farmer has 125 cows because 50 / .4 = <T>divide(50, 0.4)=125.0
The farmer has 75 female cows because 125 x .6 = <T>multiply(125, 0.6)=75.0
The farmer will get 150 gallons of milk a day because 75 x 2 = <T>multiply(75, 2)=150
