Question

What is the better buy 4 GB flash drive for $8, 2 GB for $6 or 8 GBfor $13Z

Answer 1

To know what is the better buy we have to know how much does each GB cost in each case.

For the 4 GB flash drive we have that

`(8)/(4)=2`

then each GB cost $2.

For the 2 GB flash drive we have that

`(6)/(2)=3`

then each GB cost $3.

Finally for the 8 GB we have that

`(13)/(8)=1.63`

then each GB cost $1.63.

Comparing the prices for each GB we conclude that the best buy is the 8 GB flash drive.