Sachin was twice as old as ajay 10 years back. how old is ajay today i

1.	Sachin was twice as old as ajay 10 years back. how old is ajay today if sachin will be 40 years old 10 years hence?
Answer» Answer: Sachin is 30 years old and AJAY is 20 years old. Step-by-step explanation: GIVEN : Sachin was twice as old as ajay 10 years back. To FIND : How old is ajay TODAY if sachin will be 40 years old 10 years hence? Solution : Let the Sachin's age be 'x'. Let the Ajay's age be 'y'. According to question, Sachin was twice as old as ajay 10 years back. $x-10=2(y-10)$ If Sachin will be 40 years old 10 years hence. i.e. Sachin's today age is $x=40-10=30$ SUBSTITUTE in the equation, $30-10=2(y-10)$ $20=2y-20$ $2y=40$ $y=20$ Sachin is 30 years old and Ajay is 20 years old.