Shikha purchased a wrist watch for Rs. 840 and sold it to her friend Vidhi for Rs. 910. Find her gain percent.
The cost price of the wristwatch that Shikha purchased, CP=Rs. 840
The price at which she sold it, SP=Rs. 910
Since, SP>CP
So, Gain amount =SP−CP
=(910−840)
=Rs. 70
Gain %=GainCP×100
=70840×100
=7000840
=8.3%