The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member?
Created: 6 years ago |
Updated: 3 years ago
best des
Hints: Let, 4 years ago 9 person total age = x
Now, Increase age of 10 member with old man = 10 × 4 = 40
Total present age of 10 member = x + 40
Again let present age of younger member = y
Total present age of 10 new member = x + y
According to question.
x + 40 / 10 = x + y/ 10
x + 40 = x + y
y = 40
Age of younger member = 40
Md Azizur Rahman
Founder of Satt
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