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Example problem #2. A store gives 10% discount to allstudents off the original cost of any item. If an additional 15%is taken off the discounted price, how much is the originalprice if a student purchases an item for $306?Solution:1 st 10% store discount represent 90% of original price .(100% – 10% = 90%)2 nd Discount price represent 85% of the first discount price of 90% = 0.85 x0.90 = 0.765Therefore the final price represent 76.5% of the original price.We need to find the unit price per percent.1% represent $306/.765 = $4.00Original price (100%) = 4 x 100= $400.00Here a pictorial bar model is used to represent the whole, (original price ofthe item). The whole is 100%.Original Price?$3061 unit $4.0076.5% 100%1/1/201290%11/19/2011