Question

The average age of 5 members in a family is 30 years. The youngest member's
age is 1/8 times the eldest member's age. The difference between their ages is
35 years. What will be the total age of other three members in the family?
(1) 140 years (2) 95 years (3) 105 years (4) 120 years.​

Answer 1

Answer:(3) 105 years

Step-by-step explanation:

Sum of all the ages=5*30=150 years

Let the age of the eldest member be x.

Then, the age of youngest member is x/8.

A.T.Q

x-x/8=35

8x-x/8=35

7x/8=35

x=35*8/7

=5*8

=40 years

The age of youngest member is 40/8=5 years.

Sum ot these two =40+5

=45 years

Total age of other 3 members =150-45

=105 years