The coffee lily likes is composed of 97.3% water and 2.7% cocoa. the coffee john likes is composed of 96% water and 4% cocoa. how many ounces of water, x, should be added to 30 ounces of coffee that john likes to make the coffee that lily likes?

30 ounces of the coffee John likes consists of

To this mixture we're adding ounces of water, so that the new mix has a total volume of ounces and matches the composition of the coffee Lily likes. This means it would consist of

Solve for :

###

Just to confirm: the new mixture consists of

giving a total volume of ounces of coffee, and , as required.

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.