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A collection of 8 backpacks has a mean weight of 14 pounds. A different collection of 12 backpacks has a mean weight of 9 pounds. What is the mean weight of the 20 backpacks?

Respuesta :

Answer:

0.1235

Step-by-step explanation:

Divide 14 and 8 and also divide 12and 9 then u take those two answers and add them up and you divide that answer by20

dhruvroy37

Answer:

11

Step-by-step explanation:

To calculate total weight of 8 backpacks. You multiply 8*14=112

To calculate total weight of 12 backpacks is 108 pounds. 12*9=108

Next, you have to calculate the total weight of the whole 20 backpacks 112+108=220

Lastly, you find the mean weight of 20 backpacks. So you divide 220 by 20.

Answer: 11 pounds

Hope this helped!

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