SOLUTION: The weekly videotape rentals at a video store vary directly with their advertising budget and inversely with the daily rental price. When their advertising budget is $400 and the r

Question 1174790: The weekly videotape rentals at a video store vary directly with their advertising budget and inversely with the daily rental price. When their advertising budget is $400 and the rental price is $2 per day, they rent 4600 tapes per week. How many tapes would they rent per week if they increased their advertising budget to $500 and raised their rental price to $2.50?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
R=kA/P
4600=k*400/2
4600=200k
k=23
-
R=23*500/2.50
=4600 as well, both are increased 25%
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