you have a 4 cups container and a 7 cup container. how can you use them to measure exactly 5 cups of water?
+538 Fill up the the 4 container and twice and pur both into th 7. You get 1 in the 4 and the 7 is filled. DUmp out the 7. Put the 1 in the empty 7. Fill up the 4 and pur it into the seven to get 1+4=5.
+128407 Fill the 7
Pour into 4
We have
3 in 7 and 4 is full
Pour out 4.....fill wth the 3 in the 7
So we have
3 in 4 and 0 in 7
Fill up 7, pour 1 into 4
We have
4 in 4 and 6 in 7
Pour out 4.....fill 4 from 7
We have
4 in 4 and 2 in 7
Pour out 4, fill with 2 in 7
We have 2 in 4 and 0 in 7
Fill 7 and pour 2 into 4
7 now contains 5
