Question

cost price of 8 articles is ₹ 1200 each, selling price ₹ 1400 each.

Answer 1

Let the cost price per article be xx
Let the selling price per article be yy

Assume 10x=8y=10010x=8y=100
10x=10010x=100
x=10x=10

8y=1008y=100
y=12.5y=12.5

10→12.510→12.5
2525% Gain

Hence, D.