Pedro bought 9 kg of sugar at the price of R$1.80 per kilogram, six packets of coffee at the price of R$3.90 per packet and 8 kg of rice at the price of R$2.70 per kilogram. Knowing that he paid for the purchases with a R$100.00 bill, how much change did he receive?

To calculate Pedro's total expenses and change, you need to add up the costs of sugar, coffee, and rice, and then subtract that total from the R$100.00 bill. Here's how you can do it step by step: Calculate the cost of sugar: Cost of sugar = 9 kg * R$1.80/kg = R$16.20 Calculate the cost of coffee: Cost of coffee = 6 packets * R$3.90/packet = R$23.40 Calculate the cost of rice: Cost of rice = 8 kg * R$2.70/kg = R$21.60 Add up the costs of sugar, coffee, and rice: Total cost = R$16.20 + R$23.40 + R$21.60 = R$61.20 Now, subtract the total cost from the R$100.00 bill to find the change: Change = R$100.00 - R$61.20 = R$38.80 Pedro received R$38.80 in change after paying for his purchases with a R$100.00 bill.