Question

bought at RS45 per dozen and sold at RS85 per score. profit or loss percent

Answer 1

1 SCORE =20
A/Q 
CP OF 12 =45
 CP OF 1=45/12
CP OF 20=45/12*20
     =45/3*4
       15*4
= 60
AND SP=85
GAIN =85-60=25
GAIN%=GAIN*100/CP
              25*100/60
                  =2500/60
          =41.667%