Gravitational Potential Energy physics

Question

Candy bar has an energy content of 212 Cal = 212 kcal = 8.87 x 105 J. If 81.0 kg mountain climber eats the bar, how much altitude (y) should she be able to gain? (Assume her body is 100% efficient engine) 

Answer 1

You are converting the energy in the candy bar into potential energy given by mgy.

So solve the equation 887000=mgy with m given and g=9,8m/s²