Question

shyamal babu is 4 times old as his son and 5 times old as his second son. His second son is four years younger than the first son. How old are Shyamal Babu and his two sons.​

Answer 1

Answer: Age of Shyamalbabu his elder son, young son are 80 , 20 , 16 years respectively

Step-by-step explanation:

Let, Shyamalbabu's age is x years

His elder son's age is x/4 years

His young son's age is x/5 years

According to the question,

x/4- x/5 = 4

, x/20 = 4

, x = 80 years

Elder son's age is 20 years and young son's age is 16 years

Answer 2

Step-by-step explanation:

Let, the age of 1st son is x

Age of father is then 4x

again, the age of 2nd son is y

Age of father then 5y

x-y= 4

x= 4+y

ATQ, 4x = 5y

or, 4 (4+y) = 5y [ putting the value of x]

or, 16 = y

age of 2nd son is 16

age of 1st son is 16+4 = 20

age of father = (4×20) or (5×16)

=80 years old