A vegetable merchant makes a profit of ?100 per bag on onions sold and a loss of 30 per bag on potatoes sold. a. If he sells 30 bags of onions and 50 bags of potatoes on a particular day, what is his profit or loss? b. Find his profit or loss if he sells 60 bags potatoes and 30 bags of onions. of C. Find the number of bags of onion he should sell to make no profit or no loss, if he sold 40 bags of potatoes.​