Madhya Pradesh Police Exam Model Paper 9

Given:
Marked price of jeans = Rs. 3000
Discount% = 20%
Profit% = 20%
Formula used:
SP = MP × (100 - D%)/100
CP = SP × 100/(100 + P%)
SP is selling price, CP is cost price, D% is discount percent, P% is profit percent
Calculation:
SP of jeans $=3000\times \left(100-20\right)/100$
⇒ SP = 2400
CP $=2400\times 100/\left(100+20\right)$
⇒ CP $=2400\times \left(10/12\right)=2000$
MP × (100 - D%)/100 = CP × (100 + P%)/100
$3000\times 80/100=\mathit{C}\mathit{P}\times 120/100$
CP $=24000/12=\mathit{R}\mathit{s}2000$
∴ Cost price of the pair of jeans is Rs. 2000