Question

The number of music CDs sold in 1993 by one company was approximately 2.3×106.The number of music CDs sold by the same company in 2001 was approximately 7.9×107. What is the difference in CDs sold between 1993 and 2001?

Answer 1

`\sf 76,700,000 = 7.67 * 10^7`

Explanation:

Given information:

`\textsf{CDs sold in 1993} = \sf 2.3 * 10^6`

`\textsf{CDs sold in 2001} =\sf 7.9 * 10^7`

To find the difference in CDs sold between 1993 and 2001, subtract the number of CDs sold in 1993 from the number sold in 2001.

`\sf \implies \left(7.9 * 10^7\right)-\left(2.3 * 10^6\right)`

`\sf \implies \left(7.9 * 10,000,000\right)-\left(2.3 * 1,000,000\right)`

`\sf \implies 79,000,000- 2,300,000`

`\sf \implies 76,700,000`

`\sf \implies 7.67 * 10^7`

Therefore, the difference in CDs sold between 1993 and 2001 is 76,700,000 CDs.