Question

Pencils were bought ₹ 10 per dozen and sold again at the 1 RS per pencil find gain or lose percent

Answer 1

1 dozen of pencil =12 pencils
cost for 12 pencil =10
cost for each pencil=1
hence for 12 pencil =12
profit =12-10
=2
profit percentage =(Total profit)/(Amount invested)*100

=(2/10)*100
=20%
profit percentage=20%