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17 December, 14:09

The average of p, q, and r is 40. The average of a, b, c, and d is 5. What is the average of a, b, c, d, p, q, and r?

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  1. 17 December, 15:09
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    20

    Step-by-step explanation:

    Average = sum of numbers divided by number of numbers

    sum of p q and r: 40*3=120

    sum of a b c and d: 5*4=20

    sum of a b c d p q r: 120+20=140

    average of a b c d p q r: 140/7, or 20
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