An ideal gas is taken through a cyclic thermodynamic process through four steps. The amounts of heat involved in these steps are Q1=5960  J,Q2=−5585J,Q3=−2980J and Q4=3645J respectively. The corresponding works involved are W1=2200J,W2=−825J,W3=−1100J, and W4 respectively what is the efficiency of the cycle approximately?