V. Solve the following problem involving percent of increase/decrease in commission sales, tax and simple interest. Show your solution below. 5 points each number. 26-30. Arnel waited unti after summer to buy a shoes. He found one amounting to P4,000.00 and was selling at a discount of 10%. How much did he save by waiting? How much did he pay for the shoes? 31-35. a dress was sold for 1,500.00 with a 30% discount. What was the original price of the dress? 34-40.Mrs. Toress sells used cell phones.Her commission for every cell phone sold is 20%.If her total sells is 21,250.00.How much is her commission​