Hamed own a local gold market that currently has subscriber in Instagram at a quarterly charge of R.O . He notices that if he raises the price of his commodity to R.O. ( + 4), he will lose subscriber. Assuming that subscriptions are linearly related to the price, what price should Hamed charge for a quarterly subscription to maximize his revenue?

(((((((NOTE My ID NuM is : 20F20223))))) Note that is last four-digit number, is last three-digit number and is first two-digit number (before English alphabet letter) from your MEC ID.

(((((((NOTE My ID NuM is : 20F20223))))))