the average age of group of 15 boys is 15 years when 2 more boys joined the group The average of the group rouse by 2 year . find the sum of the ages of extra 2 boys in years.?
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Answered by
13
Heya☺
Here is your answer☺
Average age of 15 boys = 15 years
After 2 boys joined = 17 years
Age of 2 boys =
sum of age of 17 boys - sum of age of 17 boys....
= 17 × 17 - 15 × 15
= 289 - 225
= 64 years
#hope it's correct☺
Here is your answer☺
Average age of 15 boys = 15 years
After 2 boys joined = 17 years
Age of 2 boys =
sum of age of 17 boys - sum of age of 17 boys....
= 17 × 17 - 15 × 15
= 289 - 225
= 64 years
#hope it's correct☺
priya201709otqosa:
wrong
whats wrong here
question is asking sum of age not average
will u plz say
why r u diving the age by 2.
i already changed that when i say the question again
ya now its fine
Answered by
6
sum of age of 15 boys =15*15=225
sum of age of 17 boys=17*17=289
sum of age of two boys =64 yrss
sum of age of 17 boys=17*17=289
sum of age of two boys =64 yrss
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