Question

To burn 400 calories after eating junk food. A person chooses to run up stairs for x minutes and walk for y minutes write an equation for the same and draw graph

Answer 1

equation will
be
X×y=400
(I am not sure you may confirm it)

Answer 2

It will be 10x+4y=400
=> 10x+47-400=0
Since Running upstairs cause 10cal/min loss and walking causes 4cal/min loss.