Question

4. The number of CDs sold in 2010 was 114 million, down from 147 million the previous year. Find the absolute and percent decrease. Give the percent decrease to two decimal places. Absolute decrease: million Percent decrease: %

Answer 1

In order to find the absolute decrease, we just have to subtract the amounts; it went from 147 million to 114 million, so:

147-114=33million.

One of the ways to find the percentual decrease is doing a cross product:

147 100%

33 x%

147x=3300

x=22.45%

The absolute decrease is 33 million CDs and the percentual decrease is 22.45%.