According to the diretions on a can of frozen orange juice concentrate,1 can of concentrate is to be mixed with 3 cans of water to make orange juice.How many 12-ounce cans of the concentrate are required to prepare 200 6-ounce servings of orange juice? 我选了100,是用200*6/12 算出来的,但答案是25 求问这题是什么意思?咋算的