Please Clear my doubt

saivarma (articles assistant) (127 Points)

27 January 2011  

While a service providing company like power station,Dams, the certainly charges WCT , but whle they purchase any material the are used to pay vat 14.5% , but when they sale , the consider Wct and it would be 2.8 % . then howcan it reasonable that Vat is 14.5% and WCT is 2.8%