The marks of three students Adam, Rafael and Sara are such that when marks obtained by one student are added to the average of marks obtained by the other two students in all possible combinations, the three different numbers obtained are 65, 69 and 76. Find the average marks obtained by the three students.

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Juhaib Khan

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US$ 10

US$ 13

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US$ 26

US$ 10

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US$ 23

US$ 24

US$ 25

US$ 26

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US$ 10

US$ 13

US$ 15

US$ 17

US$ 19

US$ 20

US$ 21

US$ 22

US$ 23

US$ 24

US$ 25

US$ 26

US$ 10

US$ 13

US$ 15

US$ 17

US$ 19

US$ 20

US$ 21

US$ 22

US$ 23

US$ 24

US$ 25

US$ 26

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Mathematics Preparation for MCA Entrance

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