Average age of a 10 members committee is same as it was 4 years ago, because an old member is replaced by a younger member. What is difference between the younger member and the old member age.
Or in other words, how younger he is from his counterpart?
may be a is the age of old member at first time
b is the age of younger one afer 4 year
so (a+x)/10 = (b+x+36)/10
now its gives result
though it was the younger ones present age so difference will be 36-4=32
The average age of a 10-members committee is the same as it was 4 years ago, because an old member has been replaced by a young member.
How many years younger was the new member than the old member he replaced?
Aakash walks 30 m North, then he turns right and walks 60 m.
Again he turns right and walks 45 m.
How far and in which direction is he now from his initial position?