the amount in kilograms of water in a human body varies directly as the mass of the body. A 96 kg man contains 64 kg of water. For a 60 kg m

"Hi there,

Body weight = k x Water content

k = constant of proportionality

96 = k 64

k = 96/64

k = 1.5

Body weight = 1.5 Water content

60 = 1.5 Water content

Water content = 60/1.5

Water content = 40 kg.

Hope this helps :-)"