Question

using complements (with respect to 1) of the single discounts, find the net cost equivalent for the discount 30/10/15. the net cost equivalent is \\(\square\\).

Explanation:

Step1: Find complement of 30% discount

A 30% discount means we pay \(1 - 0.30 = 0.70\) of the original price.

Step2: Find complement of 10% discount

A 10% discount means we pay \(1 - 0.10 = 0.90\) of the price after the first discount.

Step3: Find complement of 15% discount

A 15% discount means we pay \(1 - 0.15 = 0.85\) of the price after the second discount.

Step4: Multiply the complements together

To find the net cost equivalent, we multiply the three complements: \(0.70\times0.90\times0.85\)
First, \(0.70\times0.90 = 0.63\)
Then, \(0.63\times0.85 = 0.5355\)

Answer:

\(0.5355\)