There are six friends. The sum of the ages of all the friends is 126. If the sum of the ages of
elder 3 friends is 5/4 times that of the younger 3, then sum of the ages of younger 3 is
Answer: Let the sum of the ages of younger 3 friends is x and that of elder 3 friends is 5/4x.
According to given condition
(5/4) x + x = 126
(9/4) x = 126
x = 126 *4 /9 = 56