Question

Mohan and soan are 35 and 40 years respectively. after how many years would the ratio of their ages become 9:10

Answer 1

Let the age be x years
According to the given condition
35+x /40+x=9/10
350+10x= 360+9x
45/50=9/10
9/10=9/10

Answer 2

Answer:

The correct answer is 10 years

Step-by-step explanation:

Given data

 Mohan's age = 35 years

 Soan's  age = 40 years

here we need to find after how many years the ratio of their ages will be 9:10

Let's consider that after x years the ratio of their ages = 9:10

after x years Mohan's age = 35+x

                        Soan's age = 40+x  

Ratio of their ages = 35+x : 40+x   [ which is equals to 9:10 ]

     ⇒         35+x : 40+x = 9 : 10

                10(35+x)  = 9(40+x)

               350 + 10x = 360 + 9x

                 10x - 9x  = 360 - 350

                            x  =  10