Question $3$

A worker has a normal resting heart rate of $72$ beats per minute. During work, the worker's heart rate increases to $122$ beats per minute.

What is the increase in energy expenditure, in kcal.$/$min$?$

Question $4$

For the increase in energy expenditure calculated in question $3,$ what is the rest allowance that should be allowed? Enter your answer in a numerical format $($i$.$e$,\backslash (50\backslash \%\backslash )$ would be entered as $0\mathrm{.}50).$