Janelle spends all of her income on songs from iTunes ($1 each) and applications ($5 each) for her iTouch. If she makes her best affordable choice, she purchases 20 songs and 4 applications, what is her real income in terms of applications?

Question

Quizplus · Accepted Answer

Janelle spends $20 on songs (20 songs x $1/song = $20) and $20 on applications (4 applications x $5/application = $20). Therefore, her total income spent on applications is $20. Since each application costs $5, her real income in terms of applications is $20/$5 = 4 applications. Therefore, the best choice is to purchase the 4 applications.

Janelle Spends All of Her Income on Songs from ITunes