Question

Lalit's average earning per month in the first three months of a year was ₹4080. In April, his earning was 75% more than the average earning in the first three months. If his average earning per month for the whole year is ₹66405, then what will be Lalit's average earning (in ₹) per month from May to December?

• A. 97184
• B. 97185
• C. 97180
• D. 97183

Answer 1

Answer:

B. 97185

1. Calculate Lalit's total earnings for the first three months:

• Average earning per month for the first three months = ₹4080

• Total earnings for the first three months = 3 * ₹4080 = ₹12240

2. Calculate Lalit's earnings in April:

• Increase in April's earnings = 75% of ₹4080 = 0.75 * ₹4080 = ₹3060

• Lalit's earnings in April = ₹4080 + ₹3060 = ₹7140

3. Calculate Lalit's total earnings for the whole year:

• Average earning per month for the whole year = ₹66405

• Total earnings for the whole year = 12 * ₹66405 = ₹796860

4. Calculate Lalit's total earnings from May to December:

• Total earnings from May to December = Total earnings for the whole year - Total earnings for the first three months - Earnings in April  

• Total earnings from May to December = ₹796860 - ₹12240 - ₹7140 = ₹777480

5. Calculate Lalit's average earning per month from May to December:

• Number of months from May to December = 8

• Average earning per month from May to December = Total earnings from May to December / Number of months from May to December  

• Average earning per month from May to December = ₹777480 / 8 = ₹97185

Therefore, Lalit's average earning per month from May to December is ₹97185.