Answer:
:
Marked price is same as the list price.
20% discount means that on Rs 100 (MP), the discount is Rs 20.
By unitary method, on Re 1 the discount will be Rs $\frac{20}{100}$
On Rs 220, discount = Rs $\frac{20}{100}$x 220 = Rs 44
The sale price = (Rs 220 - Rs 44) or Rs 176
OR
A discount of 20% means forMP of Rs 100, the discount is Rs 20.
Hence, the sale price is Rs 80.
Using unitary method, when MP is Rs 100, sale price is Rs 80;
When MP is Re 1, sale price is Rs $\frac{80}{100}$
Hence, when MP is Rs 220, sale price = Rs $\frac{80}{100}$ x 220 = Rs 176.