Hasan buys two kinds of cloth materials for school uniforms,shirt material that costs him RS 50 per metre and trouser material that costs him RS 90 per metre.for every 3 meters of the shirt material he buys 2 metres of the trouser material.he sells the material at 12 percent and 10 percent profit respectively.his total sale is 36,600.how much trouser material did he buy?
