If a shopkeeper sells an object in 15 % discount, he gets a profit of 30 rupee, but if he sells this object in 20 % discount, he gets a profit of 24 rupee. Printed cost of the object is
Let the printed cost is x rupee.
According to first given condition
original cost for him will be (0.85x-30).
According to second given condition
original cost for him will be (0.80x-24).
On comparing these two values
0.85x-30 = 0.80x-24
or 0.05x = 6 or x = 120