After 12 years the age of Ramu is 3 times the age before he was 4 year

1.	After 12 years the age of Ramu is 3 times the age before he was 4 years then his present age is ………………. years. A) 16 B) 10 C) 9 D) none
Answer» Correct option is D) none Correct option is (D) none Let Ramu's present age be x years. \(\therefore\) Ramu's age before 4 years = (x - 4) years Ramu's age after 12 years = (x + 12) years \(\therefore\) x+12 = 3(x-4) \(\Rightarrow\) x+12 = 3x - 12 \(\Rightarrow\) 3x - x = 12+12 = 24 \(\Rightarrow\) 2x = 24 \(\Rightarrow\) \(x=\frac{24}2=12\) Thus, Ramu's present age is 12 years.

After 12 years the age of Ramu is 3 times the age before he was 4 years then his present age is ………………. years. A) 16 B) 10 C) 9 D) none

Answer»

Correct option is D) none

Correct option is (D) none

Let Ramu's present age be x years.

\(\therefore\) Ramu's age before 4 years = (x - 4) years

Ramu's age after 12 years = (x + 12) years

\(\therefore\) x+12 = 3(x-4)

\(\Rightarrow\) x+12 = 3x - 12

\(\Rightarrow\) 3x - x = 12+12 = 24

\(\Rightarrow\) 2x = 24

\(\Rightarrow\) \(x=\frac{24}2=12\)

Thus, Ramu's present age is 12 years.