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The average age of 5 girls is 35 and the average of another 4 girls is 40. What would be the combined average.

 Jul 5, 2020
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So, what you describe is this

(ages combined) / 5  = 35

ages combined = 175

 

 

and

ages combined / 4 = 40

ages combined = 160

 

 

Total number of years of ages combined =   175+160 = 335 years

  total # girls = 5 + 4 = 9

 

Average age  =  335 / 9 = 37.22 years old

 Jul 5, 2020

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