Question

Last year, sales at a book store increased from $5,000 to $10,000. This year, sales decreased to $5,000 from $10,000. What percentage did sales increase last year? What percentage did sales decrease this year?

Answer 1

100%, 50%

Explanation:

Answer 2

we are given that

Last year, sales at a book store increased from $5,000 to $10,000.

As we know that percentage increase is given by the formula

Percentage increase
`=(change)/(Initial)*100`

Substitute the values we get

Percentage increase
`=(10000-5000)/(5000)*100`

Percentage increase
`=(5000)/(5000)*100=100` %.

This year, sales decreased to $5,000 from $10,000.

Percentage Decrease
`=(change)/(Initial)*100`

Substitute the values we get

Percentage Decrease
`=(10000-5000)/(10000)*100`

Percentage Decrease
`=(5000)/(10000)*100=50` %.