Question

what is the signal discount is equivalent to two successive discount of 20% and 15% ?​

Answer 1

Let the marked price of an article be Rs. 100

Then first discount on it =Rs. 20

Price after discount =Rs. (100-20)=Rs. 80

Second discount on it =10% of Rs. 80

$\tt80 \times \frac{10}{100} \red{\boxed{= ₹ \: 8}}$

☛Price after second discount =Rs. (80-8)=Rs. 72

☛Net selling price =Rs. 72

✎Single discount equivalent to given successive discounts =(100-72)%

=28

Answer 2

Let the marked price of an article be Rs. 100

Then first discount on it =Rs. 20

Price after discount =Rs. (100-20)=Rs. 80

Second discount on it =10% of Rs. 80

80 × 1 /00

=₹8

☛Price after second discount =Rs. (80-8)=Rs. 72

☛Net selling price =Rs. 72

✎Single discount equivalent to given successive discounts =(100-72)%

=28