Two people are the equivalent of two plus one teabags
:. One teabag is the equivalent of 2/3 of a person
Diagram 1 can thus only mean: Take 2/3 of a person and place them in a teapot of water (presumably not H2SO4) at 95oC
BUT:
One person is the equivalent of one teabag.
:. Substituting into equation 1: Two teabags = three teabags.
:. One teabag = ??
Thus we decipher diagram 3: Take two question marks, place them in a teacup and allow to steep for two minus three minutes.
Hmm. Spending all my time with Maths honours kids is starting to do flippy things to my brain.