Question

when rahul was 6 years old , nitin was twice his age. rahul is 10 years old, how old is nitin​

Answer 1

Answer:

let age of Arjun be

′

x

′

and age of Shriya be

′

y

′

then according to question x=2y−−−(1)

and five years ago

x−5=3(y−5)

x−5=3y−15

x−3y+10=0−−−(2)

using eq(1)

2y−3y+10=0

y=10

and x=20

∴ age of Arjun is 20 and age of Shriya is 10

Answer 2

Answer:

20 years

Step-by-step explanation:

Let the present age of Nithin be $x$

According to the condition given in the question,

Age of Rahul when he was six years old / Age of Nithin when Rahul was 6 years old = Present age of Rahul / Present age of Nithin

Age of Rahul when he was six years old / 2 (Age of Rahul when he was six years old) = Present age of Rahul / Present age of Nithin (∵ When Rahul was 6 years old, Nithin was twice his age.)

$\frac{6}{6\times2}=\frac{10}{x}$

$\frac{1}{2}=\frac{10}{x}$

$x=10\times2$

$x=20$

∴ Nithin is 20 years old.