Given Data:

• 12% of households earn less than Rs. 30,000.
• 6% of households earn more than Rs. 2,00,000.
• 22% of households earn more than Rs. 1,00,000.
• 990 households earn between Rs. 30,000 and Rs. 1,00,000.

Let the total number of households be X.

Step 1: Use the total percentage of households

• 12% of X = $0.12X$ (households earning less than Rs. 30,000)
• 990 households (households earning between Rs. 30,000 and Rs. 1,00,000)
• Let y be the number of households earning between Rs. 1,00,000 and Rs. 2,00,000
• 6% of X = $0.06X$ (households earning more than Rs. 2,00,000)

Step 2: Use the 22% of households earning more than Rs. 1,00,000

• 22% of X = $0.22X$ (households earning more than Rs. 1,00,000)
• $y + 0.06X = 0.22X$
• $y = 0.22X - 0.06X = 0.16X$

Step 3: Use the total number of households

• $0.12X + 990 + 0.16X + 0.06X = X$
• $0.34X + 990 = X$
• $990 = X - 0.34X$
• $990 = 0.66X$
• $X = 990 / 0.66 = 1500$

Step 4: Calculate the number of households earning between Rs. 1,00,000 and Rs. 2,00,000

• $y = 0.16 * 1500 = 240$

Final Answer: The number of households earning between Rs. 1,00,000 and Rs. 2,00,000 is 240. Answer: B. 240