If 10% discount and then 40% discount in succession is equivalent to total of:

 a) 40%
 b) 30 %
 c) 46%
 d) 50%

SSC CHSL-2015

46%. Solution If the first discount is x% and 2nd discount is y% then , Total discount = ( x + y - xy / 100 ) % x = 10% and y = 40% Total discount = [ 10 + 40 – ( 10 x 40) / 100] % = ( 50 – 400 /100 ) % Total discount = 46%