An internet service provider in a town has 500 subscribers and charging ₹300 per month from each subscriber. He proposes to increase the monthly charges and it is believed from past experience that for every increase of ₹1, one subscriber will discontinue the service.
If ₹x is the monthly increase in subscription amount, then the number of subscribers are:
Answer & explanation
Correct answer: option 2
Total subscribers = 500
Increase of ₹x will decrease the subscribers by x
∴ 500 - x