a fruit seller has a roadside stand that can hold thirty baskets on it. He can put ten apples in a basket, or two watermelons at a time. if he makes $0.50 on each apple, and $2.00 on each watermelon, how many of each should he carry? How much will he make?

If he can fit 10 apples in a basket and get 50 cents on each then he can get 5 dollars for the basket (0.5 * 10). If he fills the basket with watermelons, he'll get two watermelons in each basket which he can sell for a profit of 2 dollars each , meaning he gets 4 dollars profit on each basket (2 * 2).

So it is in his best interest to fill all thirty baskets with apples, in which case he will get 30 * 5 = 150 dollars