Question

The Ruiz family is exchanging euros for US dollars. The exchange rate is 1 euro equals 1.35261 USD. Since the Ruiz family knows that USD are stated to the nearest hundredth of a dollar, they used the conversion ratio. Will this give the Ruiz family the correct exchange? Explain.

250*1.35=337.5 dollars
250*1.35261=338.1525, rounded to 100th: 338.12
Sample Response: No, by rounding the conversion ratio, the Ruiz family will not be getting the most accurate answer. Using the more accurate conversion ratio will give an answer with more than 2 decimal places so the answer can accurately be rounded after the conversion.

What did you include in your response? Check all that apply.

The rounded conversion will not give an accurate answer based on the limitations of the problem.
Using the more accurate conversion factor will give an answer that can then be rounded to 2 decimal places.

Answer 1

Help Please Mch Needed

Answer 2

Well in this question it shows that once you round the 1st number it equals $337.5 and once you use the actual numbers you ger $338.1525 which rounded is $338.12

Answer 3

So would you thing this seems accurate to you when the difference is a dollar and some change?