Question

average age of 6 boys is 12 years. the average age of4 other is 18 years. find the average age of all 10 boys​

Answer 1

Answer:

average=sum of age/ no of boy

therefore age of one boy= average age× no of boy12×6=72 and average age of 4 boys=18 so total year=18×4=72 so average age of 10 boys (72+72)/10

72/5 as 6+4=10