Question

Shannon had 765

cards in her baseball collection.  She
sold 153 of the cards to purchase a new iPod. 
What is the percent of change in the number of Shannon's baseball card
collection?

Answer 1

(765 - 153)/765*100

(612)/765*100

0.8*100

80% of original

100% - 80% = 20% reduction

Answer 2

20%

Explanation:

Hello

to solve this problem we can use a rule of three

Let

the total cards Shannon had is 100%

so

765 Cards ⇒ 100%

Now, she sold 153 cards

using a rule of three ,it is posible to find the percent of change

Let

765 ⇒ 100%

153 ⇒ x%?

`x=(153\ cards *100)/(764 \ cards)\\ \\`

x= 20%

Shannon sold the 20% of her cards

the percent of change in the number of Shannon's baseball card collection is 20%

Have a fantastic day