Question
13 of the number of ducks that Farmer John had was equal to 34 of the number of ducks that Farmer Andy had. When Farmer John sold 300 of his ducks and Farmer Andy bought another 40, the ratio of the number of ducks that Farmer John had to the number of ducks Farmer Andy had become 6 : 7. What was the total number of ducks that the 2 farmers had at first?
4 m

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13 of the number of ducks that Farmer John had was equal to 34 of the number of ducks that Farmer Andy had. When Farmer John sold 300 of his ducks and Farmer Andy bought another 40, the ratio of the number of ducks that Farmer John had to the number of ducks Farmer Andy had become 6 : 7. What was the total number of ducks that the 2 farmers had at first?