Demand curves for two markets are q1 = 100 - p1 and q2 = 75 -p2/2. Total costs = q2/2

Suppose the monopolist can price discriminate between the two markets, how much will the monopolist sell, and at what prices?

Now suppose price discrimination is not possible, find the profit maximising price and the quantities it will sell?

Can anyone please hel pme with this question? Iv looked over and over online and textbooks but i cannot find it

Thanks