I got debt/equity around 40%. Interest cover of the conpany was 6 times. So, 6= PBIT/ 0.84+ 0.60 PBIT would be 8.64 But after new investment, PBIT would increase by 20% which means 10.368 (8.64*120%) Hence it would decrease interest cover ratio which was already below average sector. Revised interest cover= 10.368/ 0.84+ 0.60 + 0.80 4.63 times. The interest cover falls from 6 to 4.63 times