A car dealership sold a car for $$\mathrm{R}$$ 30,000.00. If the sale was made with a profit of 25% on the cost price of the car, what is the value of the profit obtained in this business?

 30,000.00. If the sale was made with a profit of 25% on the cost price of the car, what is the value of the profit obtained in this business?

The price of a shoe is R$120.00. If it has increased by 15%, what is the new price of the shoe?

Ana and João are shopping together at a mall. They find a store with a 10% discount on shoes and a 15% discount on t-shirts. Ana decides to buy a pair of shoes for the original price of R$120.00 and a t-shirt for R$80.00, while João buys two pairs of shoes for the original price of R$90.00 each and two t-shirts for R$70.00 each. a) Calculate how much Ana paid for the items she bought with the discount. b) Calculate how much João paid for the items he bought with the discount. c) Considering the money spent by both, determine the total amount spent and the percentage of savings due to the discounts.

A tapioca and juice merchant decides to increase by 10% the amount collected from the joint sale of his products. He has already decided that the increase in the price of a juice cup will be 15%. The quantity of tapiocas and juice cups sold is the same. The current values for selling a tapioca and a juice cup are R$ 3.00 and R$ 1.00, respectively. Consider that the sales volume will not be changed. The new selling price of the tapioca, in real, should be

1. First, let's calculate the current amount collected from the sale of a tapioca and a juice cup together: Current value of tapioca: R$ 3.00 Current value of the juice cup: R$ 1.00 Total current sales: R$ 3.00 + R$ 1.00 = R$ 4.00 2. Now, let's calculate the amount collected after the 10% increase: 10% increase: R$ 4.00 * 0.10 = R$ 0.40 New total sales: R$ 4.00 + R$ 0.40 = R$ 4.40 3. Next, let's calculate the new value of the juice cup with the 15% increase: 15% increase in juice: R$ 1.00 * 0.15 = R$ 0.15 New value of the juice cup: R$ 1.00 + R$ 0.15 = R$ 1.15 4. Now, to find out the new value of the tapioca, let's subtract the new value of the juice cup from the new total sales: R$ 4.40 (new total value) - R$ 1.15 (new value of the juice cup) = R$ 3.25 (new value of the tapioca) Therefore, the new selling price of the tapioca will be R$ 3.25.

Question bank: Percentage: Discounts or Percentage Increases

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