Question

if SP of 20 chairs is same as CP of 21 chairs find the profit or loss percentage​

Answer 1

Let, CP of 1 chair be x.

CP of 18 chairs is 18x=SP of 16 chairs.

CP of 16 chairs =16x

Since, SP>CP

Profit=SP−CP

=18x−16x=2x

Profit(%)=CPprofit×100

=16x2x×100

=8100=12.5%