Question: Mr. Sergio is a fruit grower producing apples, mangoes and oranges. In a particular season, the total produce of apples was twice the total produce of mangoes, and the total produce of oranges was 200 kg more than that of mangoes. If his farm produced 400 kg of mangoes and he sold the fruits at $50 per kg, calculate the total amount of money he got in that season. Think carefully first, then make a decision:
If the total production of mangoes was 400, then orange production was 400 + 200 = 600 kg of oranges. Since apple production was twice the total production of mangoes, Mr. Sergio had 2 * 400 = 800 kg of apples. The total quantity of fruits produced at Mr. Sergio's farm is 800 kg of apples + 600 kg of oranges + 400 kg of mangoes = 1800 kg of fruits. If Mr. Sergio sold the fruits at $50 per kg, his total income from the sales is 1800 * $50 = $90000. So the answer is 90000.