IBPS RRB Office Assistant 23 Sep 2017 Paper

(2) S.P of article A = Rs.120 (let)
(Multiple of 20 and 60 = 120)
∴ S.P of article B = Rs.180
∴ C.P. of article A
=

100

120

×120 = Rs.100
C.P. of article B =

100

160

×180
= Rs.112.5
∴ Required per cent
= (

112.5−100

100

)×100=12.5%