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Question

A magazine salesperson is paid a salary of $100 per week plus $1.25 for each magazine subscription sold. How many subscriptions must be sold so that the salesperson's weekly income will be at least $150?

Answer 1

s represents the number of subscriptions sold

100 + 1.25s ≥ 150

 

Can you solve for s?

Answer 2

Let i be the salespersons's income.

Then i = 100 + 2.25s, where s is the number of subscriptions that were sold.

 

If the weekly income is at least $150, 150 ≤ i = 100 + 1.25s

50 ≤ 1.25s

50/1.25 = 40 ≤ s

 

In this case the salesperson must sell at least 40 magazine subscriptions.