ABC26GN3208 · Ratio and Proportion

Subject: General Aptitude · Chapter: Ratio and Proportion · Exam: · Marks: · Difficulty:

What is the value of a? I. Ratio of a and b is 3 : 5, where b is positive. II. Ratio of 2a and b is 12 : 10, where a is positive.

Answer

SELF-PRACTICE — the source book printed no answer.

Nothing is invented here, so this question has no answer on record.

Explanation

I. $\frac{a}{b} = \frac{3}{5}$. II. $\frac{2a}{b} = \frac{12}{10} \Rightarrow \frac{a}{b} = \frac{1}{2}\times\frac{12}{10} = \frac{3}{5}$.

Explanation as extracted from the printed page; notation may be imperfect.