Question

solve in step by step by.........​

Answer 1

$\boxed{\boxed{\tt{Solution :- }}}$

Let the present age of son be x years

So, the present age of father will be 10x

After 4 years,

Age of son = x + 4

Age of father = 10x + 4


According to the given condition

4(x + 4) = 10x + 4

☛ 4x + 16 = 10x + 4

☛ 16 - 4 = 10x - 4x

☛ 12 = 6x

☛ x = $\dfrac{12}{6}$

∴ x = 2


∴ Present age of Son ☛ x years

☛ $\pink{\underline{\pink{\underline{\tt{\red{2\:years}}}}}}$


∴ Present age of Father ☛ 10x

☛ 10 × 2

☛ $\pink{\underline{\pink{\underline{\tt{\red{20\:years}}}}}}$


∴ Answee is Option (b) ✔ ✔

$\large{\boxed{\boxed{\tt{Thanks}}}}$

Answer 2

So, the present age of son is 2 years

Present age of father is 20years

So, the correct option is b