Seven numbers are in the ratio of 1 ∶ 3 ∶ 7 ∶ 12 ∶ 13 ∶ 21 ∶ 23. Their sum is 3280 then the average of the highest three numbers is

Seven numbers are in the ratio of 1 ∶ 3 ∶ 7 ∶ 12 ∶ 13 ∶ 21 ∶ 23. Their sum is 3280 then the average of the highest three numbers is

1). 943
2). 902
3). 779
4). 786

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