15 April 2014
as per Gyan Chand Batra v. ITO, 133 TTJ (Jp) 482. you shall have to invest only the actual consideration received ie 28 lacs.
however, please note that there have been judgments like Mohd. Shoib v. Dy. CIT, 1 ITR (Trib.) 452 and Gouli Mahadevappa v. ITO, 135 TTJ (Bang.) 489 wherein it was held that valuation arrived under 50C need to be reinvested.
the logically sound judgment appears to be Gyand Chand Batra.