Respuesta :

Raflame

Answer:

[tex]\frac{37 + x}{2} = 42\\\\(2)\frac{37 + x}{2} = 42(2)\\\\37 + x = 84\\x = 84 - 37\\x = 47 kg[/tex]

devishri1977

Answer:

47 Kg

Step-by-step explanation:

Average:

    Average is calculated dividing the sum of all the data by the total number of data.

Mass of one girl = 37 Kg

Let the mass of other girl = x  Kg

Average mass of two girls = 42 Kg

                [tex]\sf \dfrac{x + 37}{2} = 42\\\\ x + 37 = 42*2\\\\x + 37 = 84[/tex]

                       x = 84 - 37

                       x = 47 Kg

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