Question

khsayap is 21 year old and kisunk is fifteen year old after how many year will khsayab we twice as old as kisunk

step by step explanation​

Answer 1

Answer:

It would take 9 years for Kashyap to become twice as old as kinsuk.

Step-by-step explanation:

Given :-

• Kashyap is 21 years old.

• Kinsuk is 15 years younger than Kashyap.

To find :-

year, when Kashyap will be twice as old as kinsuk = ?

Procedure :-

Let's assume the year be x years.

It is said that Kashyap is as 15 year older than kiinsuk

So, age of kinsuk :

So, age of kinsuk:-

• 21 - 15 = 6 years.

Years after which Kashyap would be twice as old as kinsuk

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \implies \sf \: x + 21 = 2x + 12$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \implies \sf \: x + 21 = 2(x) + (2)(6)$

Simplify Both Sides :-

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \implies \sf \: x + 21 = 2x + 12$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \implies \sf \: x + 21 = 2x + 12$

Subtract 2x from both side:-

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \implies \sf \: x + 21 \pink{ - 2x} = 2x + 12 \pink{- 2x}$

Subtract 21 from both sides:-

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \implies \sf \: - x + 21 \pink{ - 21} = 12 \pink{ - 21}$

Divide both sides by -1

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \implies \sf \: \dfrac{ - x}{ \pink{ - 1}} = \dfrac{ - 9}{ \pink{ - 1}}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \implies \sf \: x = 9years$

It would take 9 years for kashyap to get twice as old as kinsuk.

Answer 2

Question= khsayap is 21 year old and kisunk is fifteen year old after how many year will khsayab we twice as old as kisunk

Solution ⬇️

Khsayap= 21 years now, while Kisunk= (21–15) = 6 years now.

Khsayap: Kisunk= 21 : 6

(Khsayap+x) : (Kisunk + x) = 2 :1

(21+x) : (6+ x) = 2 :1

1(21+x) = 2(6+x), or

21 + x = 12 + 2x, or

x = 9.

So in 9 years from now, the ages of Khsayap : Kisunk will be in the ratio of 2:1.