Posted by **Kemmaris** on Monday, May 14, 2007 at 9:40pm.

how do i do these two. irene bought a typewriter at rocklanes in 1988 for $200.In 1999, she bought the same model of typewriter for $120.What is the percent decrease in the price of the typewriter. denise bought a typewriter at rocklanes in 1984 for $500. In 2000 , she bought the same model of typewriter for $440. What is the percent decrease in the price of the typewriter?

Percent decrease = 100 x (Original Price - Current Price) / (Original Price)

In the first question, that is (200-120)/200 x 100 = 40%

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