9
AssignmentLong Text
Dimensional Analysis
Question 9 • WV-Algebra I CR
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.
Answer
Answer:
No. Using 1.35 USD per euro rounds the exchange rate too early and may give an inaccurate exchange. Use the full rate, 1.35261 USD per euro, for the conversion, then round the final amount to the nearest hundredth.