Ganeshi's monthly income is twice Jassi's monthly income. Two-third of Jassi's monthly income is equal to Sukhvinder's monthly income. If Sukhvinder's annual income is ₹ 2.34 lakhs, what is Ganeshi's monthly income?
Aptitude
Simplification
Difficulty: Medium
Choose an option
-
A₹ 14625
-
B₹ 29250
-
C₹ 28230
-
D₹ 58500
-
ENone of these
Answer
Correct Answer: ₹ 58500
Explanation
### Concept & Strategy
The problem links three distinct entities through consecutive multipliers. The critical operational task is maintaining consistency between annual units and monthly units before performing the substitutions.
### Step-by-Step Solution
* **Given:**
* Ganeshi's monthly income ($G$) = $2 \times$ Jassi's monthly income ($J$)
* Sukhvinder's monthly income ($S$) = $\frac{2}{3} \times$ Jassi's monthly income ($J$)
* Sukhvinder's annual income = ₹ 2,34,000
* **Calculation:**
* Step 1: Find Sukhvinder's monthly income ($S$):
$$ S = \frac{2,34,000}{12} = \text{₹ } 19,500 $$
* Step 2: Use the relation between $S$ and $J$ to find $J$:
$$ 19,500 = \frac{2}{3} \times J \implies J = 19,500 \times \frac{3}{2} = 9,750 \times 3 = \text{₹ } 29,250 $$
* Step 3: Compute Ganeshi's monthly income ($G$):
$$ G = 2 \times J = 2 \times 29,250 = \text{₹ } 58,500 $$
### Exam Strategy & Shortcut
Combine the variable equations down into a direct structural ratio layout:
$$ \frac{G}{S} = \frac{2J}{\frac{2}{3}J} = 2 \times \frac{3}{2} = 3 $$
This directly tells us that Ganeshi's monthly income is exactly 3 times Sukhvinder's monthly income.
* Sukhvinder's monthly income = $\frac{2,34,000}{12} = 19,500$.
* Ganeshi's monthly income = $19,500 \times 3 = 58,500$.
### Common Pitfall
A common mistake is using the annual figure (2.34 lakhs) directly without converting it to a monthly scale first, leading to massive scale mismatches in the options.
### Final Answer
**Therefore, the correct answer is ₹ 58500.**