SSC JE Mechanical Engineering 22 Mar 2021 Shift 2 Papers

Given information is
Profit percentage of Mangesh by selling the Bicycle to Ragini is 12%
Profit percentage of Ragini by selling the Bicycle to Karthik is 14%
Selling price of Bicycle of Ragini = Rs 5362.56 = Cost price of bicycle of Kartik
Formula used:
Profit = selling price - cost price
Profit% = Profit/cost price × 100
Calculation:
14% = ((5362.56 - cost price)/cost price)) × 100
0.14 = (5362.56 - cost price)/cost price
0.14 × cost price = 5362.56 - cost price
0.14 × cost price + cost price = 5362.56
1.14 × cost price = 5362.56
Cost price = 5362.56/1.14
Cost price of Ragini = Rs 4704 = Selling price of Bicycle of Kartik
Again using above formula
0.12 = (4704 - Cost price/cost price)
0.12 × Cost price = 4704 - Cost price
0.12 × Cost price + Cost price = 4704
1.12 × Cost price = 4704
Cost price = 4704/1.12
Cost price of Bicycle in the shop = Rs 4200.
Hence, the correct answer is "4200".