Analysis: Buy 15 apples to get 5 yuan, sell 15 apples to get 6 yuan, and earn 1 yuan profit. 15 apple×10 times = 150 apple.

Scheme 2: You can get 0.4 yuan for selling 1 apple and get 1 yuan for buying 3 apples. If you sell three apples, you will get 1.2 yuan, and if you earn 0.2 yuan, you will earn 10 yuan. Use 10 yuan-0.2 yuan =50 copies, and sell 3 apples ×50 copies = 150 apples.

Question 2: 125 capsule may be 15 capsule, 125 capsule can be made, 15 capsule is simpler and the method is the same. Now let me change the original question.

The breeder distributed peanuts to three groups of monkeys. If assigned to the first group, each monkey will get12; If assigned to the second group, each monkey will get15; If you give it to the third group, each monkey will get 20, so how much will each monkey get? The answer is: 5 capsules.

Analysis: 1. The lowest common multiple of 12, 15 and 20 is 60. It can be inferred from the third grade that the third group of three monkeys is 60 peanuts, the first group of five monkeys and the second group of four monkeys can all be divided. So the total is 60. The total number of three groups of monkeys is 3+4+5= 12 monkeys. 60 capsules12 capsules =5 capsules. The total number can also be 120, so the corresponding number of monkeys doubles, and the answer is still 5.