Question

please explain its answer i will mark correct answer as brainliest​

Answer 1

Answer:

Let the present age of the man be x years and that of his son be y years. After 5 years man’s age = x + 5 After 5 years ago son’s age = y + 5 As per the question x + 5 = 3(y + 5) ⇒ x – 3y = 10 ……………

Please mark brainliest

Answer 2

Answer:

Let the father present age =x years and son present age =y years

According to the first condition

5 years later father will be (x+5) years old and son will be (y+5) years old.

⇒x+5=3(y+5)

⇒x+5=3y+15⇒x=3y+10....eq1

According to the second condition

5 years ago father was (x−5) years old and son was (y−5) years old.

⇒x−5=7(y−5)

⇒x−5=7y−35

⇒x−7y=−30....eq2

Put the value of x from eq1

⇒3y+10−7y=−30⇒−4y=−40⇒y=10

Put y=10 in eq1

⇒x=3×10+10=40

Hence, Father present age =40 years

Son present age =10 years