Cost price of the article ` = 620` Rs
Marked price of the articles ` = 620**100/(100-25) = 620**4/3`
Rs
`15%` discount is on marked price.
`:.` Selling price of the article `S.P. = 620**4/3**(100-15)/100`
`=>S.P. = 620**4/3**85/100 = 702.66` Rs
`:.%` profit ` = (702.66-620)/620**100 = 82.66/62**10 = 13.33%`