In n₁ and n₂ are the indices of compression for the first and second stage of compression, then the ratio of work-done on the first and second stages $$\left( {\frac{{{{\text{W}}_1}}}{{{{\text{W}}_2}}}} \right)$$  with perfect intercooling is given by

In n₁ and n₂ are the indices of compression for the first and second stage of compression, then the ratio of work-done on the first and second stages $$\left( {\frac{{{{\text{W}}_1}}}{{{{\text{W}}_2}}}} \right)$$  with perfect intercooling is given by $$\frac{{{{\text{W}}_1}}}{{{{\text{W}}_2}}} = \frac{{{{\text{n}}_1}\left( {{{\text{n}}_2} - 1} \right)}}{{{{\text{n}}_2}\left( {{{\text{n}}_1} - 1} \right)}}$$