KARACHI -After long Eid holidays, dollar strengthened against rupee in money market on Thursday and it was traded at highest rate of Rs 103.40 in open market. According to the details provided by The Forex Association of Pakistan, dollar traded at minimum rate of Rs 101.86 and maximum rate of Rs 101.91 in inter-bank market while it was traded at lowest rate of Rs 103.15 and highest rate of Rs 103.40 in cash free market.