Mary will make punch that is 25% fruit juice by adding pure fruit juice to a 2-liter mixture that is 10% pure fruit juice. How many liters of pure juice does she need to add?
问道数学题?谢谢!
Mary will make punch that is 25% fruit juice by adding pure fruit juice to a 2-liter mixture that is 10% pure fruit juice. How many liters of pure juice does she need to add?
所有跟帖:
• .4 -britannica- ♀ (0 bytes) () 07/14/2008 postreply 13:00:21
• how to get 0.4? -恰好- ♀ (0 bytes) () 07/14/2008 postreply 13:02:00
• 2*(1-10%)/(1-25%)-2 -britannica- ♀ (0 bytes) () 07/14/2008 postreply 13:03:11