 Hello and welcome to the session. In this session we are going to discuss the following question which says that a shopkeeper purchases an alveola at $1200 at the successive discount of 5% and 10% respectively. He spent $64 on transportation and sold the alveola for $1,308. Now we are given that a shopkeeper purchases an alveola at $1,200. That is, the marked price of the alveola is given as $1,200 with two successive discounts of 5% and 10% respectively. He also spent $64 on transportation and the selling price of the alveola is $1,308. We need to find his main percent. Let us proceed with the solution. The marked price of the alveola is given as $1,200. Now the first discount is given as the rate of 5% so we have 5% of $1,200 that is 5 upon 100 into $1,200 which is equal to $60. Therefore the reduced price is given by $1,200 minus $60 which is equal to $1,140 and the second discount $1,140 is at 10%. Therefore we have 10% of $1,140 that is 10 upon 100 into $1,140 which is equal to $114. Therefore the further reduced price will be $1,140 minus $114 which is equal to $1,026 transportation charges is given as $64. Therefore the total cost price is given by reduced price that is $1,026 plus the transportation charges that is $64 which is equal to $1,090. Now we are given the selling price as $1,308 and the cost price is $1,090. Therefore profit is given by selling price minus cost price which is equal to $1,308 minus $1,090 which is equal to $218. Now profit percent is given by profit upon cost price into $100 which is equal to profit that is $218 upon cost price that is $1,090 into $100 which is equal to $20. So profit percent is equal to $20. Therefore we can say the profit is 20%. This completes our session. Hope you enjoyed this session.