A newsstand sells Local Business magazine. The cost to purchase the magazine is the list price of $5 less a discount of 25%. Fixed costs, including rent on the display space, are $190 per week. The usual price for the magazine is the list price. Answer each of the following independent questions.
(a) If the desired profit is $100, how many magazines must the newsstand sell each week?
(b) If the purchase discount is 20% of the list price, how many magazines must the newsstand sell each week to achieve a desired profit of $150?
(c) If the newsstand put the magazine “on sale” at 10% off, how much would the profit be if it sold 300 units in a week?
(d) If the cost to purchase the magazine is 30% off the list price, and 200 magazines are sold, what is the lowest price the newsstand can charge for each magazine and still break even?