Question

average age of 25 boys is 12 years. the average age og first 15 boys is 15 years. find the average age of remaining 10 boys?
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Answer 1

Answer:

hi , I think this is the answer

n/25 = 12

n = 12*25

n = 300

next step

n/15 = 15

n = 225

now subtract 300 and 225 you will get the sum of ages of the remaining 10 members

the sum of ages of the remaining 10 members is 75

75/10 = 7.5

hence average of the age of the 10 members is 7.5

hope this will help you

Answer 2

Answer:

Step-by-step explanation:

average age of 25 boys is 12 years. thr average age of first 15 boys is 15 years. find the average age of remaining 10 days