Math, asked by Tarunvirat, 11 months ago

Please answer it fast

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Answered by BrainlyPopularman

1

Answer:

sum of 45 numbers is = 45 × 18

sum of 75 numbers is = 45 × 18 + 13 × 30 = 810 + 390 = 1200

mean = 1200/75 = 16

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