Question

the selling price of 10 pencils is equal to the cost price of 11 pencils .What is the profit percentage?​

Answer 1

$<b><i><u>$ Let the cost price of 10 pencils be 100.
So, the cost of 1 pencil = 100/10↪️10₹

Also let the SP of 11 pencil be 100.
So, the sp of 1 pencil = 100/11

Profit ==> SP - CP
➡️ 10/1 - 100/11
➡️ 110 - 100/11 =10/11

PROFIT PERCENT⤵️⤵️

==> profit/CP × 100
==> 10/11 ÷ 100/11 × 100
==> 10/11× 11/100 ×100
==>1/10×100
==> 10% ans