Question

The net price equivalent rate (in decimal form) of 9/15/18 is:

Answer 1

Net price equalent rate =

100% - 9 = 0.91

100% - 15 = 0.85

100% - 18 = 0.82

0.91 x 0.85 x 0.82 = 0.63427

Answer 2

Given:

Chain discount= 9/15/18

To find:

The net price equivalent rate

Solution:

The net price equivalent rate is 0.63427.

We can find the rate by following the given steps-

We know that the net price equivalent rate is the rate after deducting all the discount rates from the marked price.

The chain discount given to us is 9/15/18 which represents a 9%, 15%, and an 18% discount.

We can calculate the net equivalent rate by deducting the discount rates from 1 and multiplying them.

The net equivalent rate=(1-d1))1-d2)(1-d3), d1, d2, d3 are the given discount rates.

We will calculate the difference between 1 and the given discounts.

1-9%=1-0.09=0.91

1-15%=1-0.15=0.85

1-18%=1-0.18=0.82

Using these values,

The net equivalent rate=0.91×0.85×0.82

=0.63427

Therefore, the net price equivalent rate is 0.63427.