Question

Leslie had a box that contained 720 red beans at first. He also had 2 identical Containers, A and B, which were filled to the brim with some green beans and red beans. The ratio of the number of green beans to the number of red beans in Containers A and B were 1:5 and 5:3 respectively. When Leslie took out all the red beans from Containers A and B and put them into the box, there was a total of 1300 red beans in the box. How many green beans were in Container A?
Bot
The answer is 240 green beans in Container A.