Brain Teasers
Making Punch
Ruby is making a bowl of punch. She needs 7 cups of water. Ruby doesn't have a measuring cup, but she has three pitchers. One pitcher holds 9 cups of water. Another pitcher holds 6 cups of water. The last pitcher holds 4 cups of water. How can Ruby measure exactly 7 cups of water with her pitchers?
Hint
She can't just put 7 cups in the 9 cup pitcher...Answer
Ruby can fill the pitcher that holds 4 cups. Then she can fill the 9 cup pitcher and pour the water into the 6 cup pitcher. When the 6 cup pitcher is full, the 9 cup pitcher will be left with 3 cups. Ruby still has the 4 cup pitcher filled. 3 cups with another 4 cups is 7 cups.Hide Hint Show Hint Hide Answer Show Answer
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Comments
this can b done more than 1 way.
It can be done in more than one way, like below says.
HOW CAN THIS B DONE IN MORE THAN 1 WAY? SHE CANT JUST POUR 7 CUPS IN2 THE 9 CUP PITCHER! SHE CANT MESUR IT!!!!!!!
Easier to fill the 4 cup measure and pour it into the 6 cupper. Now just pour off 2 cups from the 9 cup jug by topping up the sixer!
true, never thought ov it. thanx, & gr8 work!
Why are you putting your homework on this site?
Hehe.
Hehe.
easy! a variation of the die hard 3 puzzle!
Or you can fill the 6 cups and 4 cups, pour 6 cups into the 9 cups, fill the 9 with the 4 cups, leaving 1 cup in the 4 cup container. Then fill the 6 cup container and you have 6 cups plus 1 cup.
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