I understand the problem but not the tests
It seems like the water content halves every ~69 minutes. But the first sentence about 100% and 100 minutes are very confusing. If it is exponential decay, then water should never reach 0.
Distance walked 3D
Construct a string from letters and counts
Convert hex color specification to MATLAB RGB
Flip the main diagonal of a matrix
Parse string and identify specific string sequence in algebraic equation
Acidity of vinegar and salts
Simple spirometer - find your lung capacity from the number and size of soap bubbles in one breath
Energy of a photon
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