A runner and a cyclist are both training on a warm day. They can lose at most $1$ kg of moisture per hour via sweat$-$ ing without becoming dehydrated.

A person looses most of their excess ther$-$ mal energy via the evaporation of sweat and the latent heat of vaporisation of sweat is $2\mathrm{.}23106$ J kg$1.$ The runner runs with an efficiency of $10\%.$ What is the rate at which the runner can do work? The cyclist cycles with an efficiency of $19\%.$ What is the rate at which the cyclist can do work?