Question

if the credit price of 5 copies of a book is equal to the cash prize of six copies of the same book what is the rate of discount?note:from present worth and discount ​

Answer 1

Answer:

16.67%

Step-by-step explanation:

Let X be the credit price per book:

$Total \ Credit \ Price=5X$

Let Y be the cash price per book:

$Total \ Cash \ Price=6Y$

#The net credit price is equal to the net cash price:

$5X=6Y\\\\Y=\frac{5}{6}X$

-For each cash buy, you pay 1/6 less than for each credit buy which is the discount rate:

$d=(1-\frac{5}{6})\times 100\%\\\\=16.67\%$

Hence, the discount rate is 16.67%