Respuesta :
Answer:
She should give 28, and they will both have 59
Step-by-step explanation:
The number of marbles that Jenny should give to her brother so that they have the same number of marbles is 28.
What is the average of two numbers?
The average or the mean of two numbers is the sum of the two numbers divided by the number of observations.
As the total number of marbles that both Jenny and his brother have is 118 (87+31). Therefore, the number of marbles that each one has is,
[tex]\text{Number of marbles that each one has}=\dfrac{\text{Total number of marbles}}{2}[/tex]
[tex]=\dfrac{118}{2} = 59[/tex]
The number of marbles that Jenny's brother need so that each of the two has an equal number of marbles,
= 59 - 31
= 28
Hence, the number of marbles that Jenny should give to her brother so that they have the same number of marbles is 28.
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