ABC26GN2483 · Percentage
Subject: General Aptitude · Chapter: Percentage · Exam: · Marks: · Difficulty:
Due to an increase of 30\% in the price of eggs, 3 eggs less are available for ₹ 7.80. The present rate of eggs per dozen is
(a)₹ 8.64
(b)₹ 8.88
(c)₹ 9.36
(d)₹ 10.40
Answer
Explanation
Let the original price per egg be ₹ $x$. Then, increased price $$\begin{aligned} & =₹\left(\frac{130}{100} x\right) . \\ & \therefore \quad \frac{7 \cdot 80}{x}-\frac{7 \cdot 80}{\frac{130}{100} x}=3 \Leftrightarrow \frac{7 \cdot 80}{x}-\frac{780}{130 x}=3 \\ & \Leftrightarrow \quad 1014-780=3 \times 130 x \Rightarrow 390 x=234 \Leftrightarrow x=0.6 . \end{aligned}$$
Explanation as extracted from the printed page; notation may be imperfect.
Open in whiteboard · Browse this chapter in the app