AP EAPCET 18th May 2023 Shift 1 Solved Paper

A gas is expanded from an initial state to a final state along a path that consists of (a) an isothermal expansion doing 40J work, (b) an adiabatic expansion doing W work, (c) an isothermal expansion doing 30J work. If the total change in the internal energy of the gas is - 20J, the work done by the gas during the adiabatic expansion W=