Jane, Andre, and Maria pick apples. Andre picks three times as many pounds Maria. Jane picks two times pounds as Andre. The total weight of apples is 840 pounds. How many pounds of apples does Andre pick?

Jane's apples + Andre's apples + Maria's apple = 840

j + a + m = 840

(Andre picks three times as many pounds Maria, so a is 3 times "m")

j + 3*m + m = 840

(Jane picks two time pounds as Andre, so j is 2 * a or 2 * 3 times "m")

2 * 3 * m + 3*m + m = 840

6 * m + 3*m + m = 840

9 * m + m = 840

10 * m = 840 (divide each side by 10)

m = 840/10

m = 84

a is 3 time m

a is 3 * 84

a = 252

The answer is 252 pounds