SOLUTION: The revenue for a sandwich shop is directly proportional to its advertising budget. When the owner spent $2000 a month on advertising, the revenue was $120,000. If the revenue is n

Algebra ->  Proportions -> SOLUTION: The revenue for a sandwich shop is directly proportional to its advertising budget. When the owner spent $2000 a month on advertising, the revenue was $120,000. If the revenue is n      Log On


   

Question 68453: The revenue for a sandwich shop is directly proportional to its advertising budget. When the owner spent $2000 a month on advertising, the revenue was $120,000. If the revenue is now $180,000, how much is the owner spending on advertising?
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
The revenue for a sandwich shop is directly proportional to its advertising budget. When the owner spent $2000 a month on advertising, the revenue was $120,000. If the revenue is now $180,000, how much is the owner spending on advertising?
Let revenue be: R
Let advertising budget be: B
The constant of proportionality: k
Then R=kB
To find k, let B=2000 and R=120000 and solve for k.
120000=k%282000%29
120000%2F2000=k%282000%29%2F2000
60=k
Therefore, R=60B Is our forumal to answer the question.
Now let R=180000 and solve for B
180000=60B
180000%2F60=60B%2F60
highlight%283000=B%29
Therefore the owner spent $3000 on advertising.
Happy Calculating!!!!