Question

Aman is x years of age now. what his age 5 years ago and what will be his age after 7 years​

Answer 1

Answer:

Step-by-step explanation:

Formula (a−b)  

2

=a  

2

+b  

2

−2ab

Given, a  

2

+b  

2

=41 and ab=4

So, (a−b)  

2

=a  

2

+b  

2

−2ab=41−2×4=41−8=33

=>a−b=  

33

​  

Answer 2

Let Five years ago the age of son be x years and age of father be 7x years

Present age of son =x+5

Present age of father =7x+5

5 years later their age will (x+10) and (7x+10)

∴7x+10=3(x+10)

7x−3x=20

4x=20

x=5

So, the present age of son=x+5=5+5=10years

and the present age of father=7x+5=35+5=40years

hope it helps you