Question

Arun is now 20 years old and Mohan is 4 years old .In how many years will arun be twice as old as Mohan??????​

Answer 1

Answer:

Step-by-step explanation:

2.5

Answer 2

Answer:

present age of arun is 20

present age of mohan is 4

let after x years the age of arun will be double of mohan age

then,

the age of arun after x years is 20+x

and age of mohan will be 4+x

hence,

the equation become according to question is

20+x=2(4+x)

20 +x=8+2x

20-8=2x-x

12=x

hence after 12 years the age of arun will be double of mohan