Rahim is 12 years old. He is three times older than Karim. What will be the age of Rahim when he is two times older than Karim?

15 years

16 years

17 years

18 years


Description (বিবরণ) :

প্রশ্ন: Rahim is 12 years old. He is three times older than Karim. What will be the age of Rahim when he is two times older than Karim?

ব্যাখ্যা:

If karim's age is x, then Rahim's age will be 3x. 
According to question , 3x = 12 
                    ∴   x = 4 
after y years, Rahim's age will be doubled than Karim. 
∴ 12 + y = 2 (4 + y) y = 4 at the time, Rahim's age  =  3x  +  y  = 3 × 4 + 4 = 16