how many gallons of cream that is 30% butterfat must be mixed with milk that is 3% butterfat to make 45 gollons that are 12% buterfat

how many gallons of cream that is 30% butterfat must be mixed with milk that is 3% butterfat to make 45 gollons that are 12% buterfat 英语翻译A rainstorm increased the amount of water stored in State J reservoirs from 124 billion gallons to 138 billio gallons.If the storm increased the amount of water in the reservoirs to 82 percent of total capacity,approximately how many bill 英语翻译【If 2 percent of a 12-gallon solution is sodium,how many gallons of pure sodium must be added to make a new solution that is 6 percent sodium?】请翻译上面【】裏面的内容, gallons of water is/are 英语翻译：to mordant with alum heat 4 gallons of water. 翻译How many of them are boys? how many kinds of pollution are there? How many bags of milk would you How many of them are languages? how many kinds of poputions are there? How many of them are piaying是什么意思? How many types of masturbation are there? How many member of your family? How many kind of animals in africa? how many bottles of water are here? 选择__________meat can you see?A How many B How many bag of C How many bags of how many kind of food?还是how many kinds of food? 是how many box of tomatoes are over there?还是how many boxes of tomatoes?