SAT一道数学题Pink paint is made by mixing 5 parts white with 1 pa
SAT一道数学题 Pink paint is made by mixing 5 parts white with 1 part red paint.If Joseph uses this method for making pink paint and he has 3 gallons of white paint and 1 gallon red,what is the maximum amount of pink paint that Joseph can make? 答案是五分之十八,即3.6,
每份pink paint是由五份white paint和一份red paint加工而成 那么你有3 gal white paint 和 1 gal red paint 说明red paint用不完,答案就是用掉的white paint 加上用掉的 red paint 那么 3+3/5=18/5 gal 懂了吗?