Problemas con números decimales
1) Solía ir al supermercado y compro pan por el costo de 1,25 $, leche por 3, huevos por 2,40 $ y trigo con un billete de 10 $. ¿Cuánto dinero le devolvieron?
Answer (1)
Calculate the total cost of bread and juice: 1.25 + 2.405 = 3.655 .
Subtract the total cost from the $10 bill: 10 − 3.655 = 6.345 .
The change received is 6.345 .
Assuming no milk purchase, the change is 6.345 .
Explanation
Understanding the Problem Let's break down the problem. We need to find out how much change someone gets back after buying bread and juice with a 10 bill. The bread costs 1.25, and the juice costs 2.405. We'll assume 's' in 'leche per eas s' is a typo and the milk cost is missing. For now, we'll calculate the change without the milk cost and address the missing information later.
Calculating Total Cost First, we need to calculate the total cost of the bread and juice. We add the cost of the bread (1.25) and the cost of the juice (2.405):
Summing the Costs The sum of the cost of bread and juice is: 1.25 + 2.405 = 3.655
Calculating the Change Now, we subtract the total cost of the bread and juice from the 10 bill to find the change: 10 − 3.655 = 6.345
Final Answer So, if the person only bought bread and juice, they would receive 6.345 in change. Since the cost of milk is missing, we cannot provide a complete answer. Assuming there was no milk purchase, the change is 6.345.
Examples
Imagine you're at a school fair. You have $10 to spend. You buy a hotdog for $3.50 and a drink for $2.25. Calculating your remaining money is similar to the problem we just solved. Knowing how to calculate change helps you manage your money and make sure you're getting the correct amount back after a purchase. This is a practical skill used every day!
