IBPS Clerk Prelims Model Paper 6

Successive discounts of 20% and 20% makes overall discount of
(-20)+(-20)+(-20)(-20)/100=-40+4=-36%
So she buys the article for
[(100-36)/100] x 30000=₹ 19,200
Radhika spends 2800 on repairs, so total CP
=2800+19200=₹ 22,000
SP= ₹ 26,000
So profit%=(4000/22000) x 100 = 200/11 %