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In a set of numbers, the average of the first four is 15, and the average of the last three is 8. What is the average of all seven members?

Respuesta :

ryalphotography88
(8+15)/2. The answer is 12.5.
Christalise
15×4+8×3=60+24=84
84÷7=12
12 is supposed to be the answer.

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