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The average score of 42 students in a te...

The average score of 42 students in a test is 69. The ratio of the number of boysto that of girls is 10`:` 11. The average score of the boys is 20% more than that of the girls. The average score of the boys is `:`

A

73.5

B

75.2

C

82.8

D

75.6

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The correct Answer is:
D
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GAGAN PRATAP -ALLIGATION-ALLIGATION (SHEET-3)
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