Question

Manish's average earning per month in the first three months of a year was ₹8784. In April, his earning was 25% more than the average earning in the first three months. If his average earning per month for the whole year is ₹99085, then what will be Manish's average earning (in ₹) per month from May to December?

• A. 143962
• B. 143958
• C. 143960
• D. 143961

Answer 1

Answer:

D. 143961

Here's how to solve this problem step-by-step:

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

• Average earning per month for the first three months = ₹8784

• Total earnings for the first three months = 3 * ₹8784 = ₹26352

2. Calculate Manish's earnings in April:

• Increase in April's earnings = 25% of ₹8784 = 0.25 * ₹8784 = ₹2196

• Manish's earnings in April = ₹8784 + ₹2196 = ₹10980

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

• Average earning per month for the whole year = ₹99085

• Total earnings for the whole year = 12 * ₹99085 = ₹1189020

4. Calculate Manish'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 = ₹1189020 - ₹26352 - ₹10980 = ₹1151688

5. Calculate Manish'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 = ₹1151688 / 8 = ₹143961

Therefore, Manish's average earning per month from May to December is ₹143961.