Question

the current age of mark's father is three times that of mark's age . afrer 5 years the sum of their age will be 90 years. what are their current age?​

Answer 1

Answer:

mark age is x

mark father age is y

given y is equal to the 3x

x+5)+3x+5is equal to 90 by solvingages are 20 and 60

Answer 2

Step-by-step explanation:

Let the age of mark=x

Then age of mark's father=three times of mark's age=3x

After five years the sum of their ages will be =90

5(x+3x)=90

x+3x=90÷5

x+3x=18

4x=18

x=18÷4x

x=9\4