ABC26GN1684 · Problems on Numbers

Subject: General Aptitude · Chapter: Problems on Numbers · Exam: · Marks: · Difficulty:

Two numbers are such that the ratio between them is 4 : 7. If each is increased by 4, the ratio becomes 3 : 5. The larger number is

(a)36

(b)48

(c)56

(d)64

Answer

Answer (as printed): C

Explanation

Let the numbers be $4 x$ and $7 x$. Then, $\frac{4 x+4}{7 x+4}=\frac{3}{5} \Leftrightarrow 5(4 x+4)=3(7 x+4) \Leftrightarrow x=8$. $$\therefore \quad \text { Larger number }=7 x=56 .$$

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

Open in whiteboard · Browse this chapter in the app