clc //initialisation of variables a=0.259*1/0.21//mole air m=1.233*1.200//mole air h=24.74//lbm/air q=28.95//lbm/air //CALCULATIONS AF=(m*q)/h//lbm/air/lbm fuel //RESULTS printf('the air -fuel ratio on valumetric basic mass=% f lbm air/lbm fuel',AF)