Prep-ps-9

foamflouer

9.        1662-!-item-!-187;#058&002391
Equal amounts of water were poured into two empty jars of different capacities, which made one jar   full and the other jar   full.  If the water in the jar with the lesser capacity is then poured into the jar with the greater capacity, what fraction of the larger jar will be filled with water?

Ans: 1/2

feiya

第二次倒得和第一次倒得其实是一样的，乘以2就可以了

蜂鸣

“Equal amounts”，不用多去想1/3和1/4，他们是一样的体积，所以第一个罐里德谁水倒到第二个里也是第二罐的1/4,所以1/4+1/4=1/2