Question 1
Eleanor is 4 times as old as his son Karan. After 4 years, the sum of their ages will be 78. How old is Karan now?
Let son's age = x, then father's age = 4x
After 4 years: (4x+4) + (x+4) = 78
(4+1)x + 8 = 78
(5)x = 70
x = 14
After 4 years: (4x+4) + (x+4) = 78
(4+1)x + 8 = 78
(5)x = 70
x = 14