Currency Exchange problem?

Question

rockinhood · Answer

Zebediah is an American traveling with a tour group in Eastern Europe. During a stop in Romania, he purchases a souvenir that is priced at 177 Romanian leu using his credit card. If the exchange rate that day is USD to RON = 2.89, which is the best estimate of the charge Zebediah will later find on his credit card statement?

rockinhood · Answer

Multiple Choice: http://prntscr.com/bb2dmx

rockinhood · Answer

@Hero

welshfella · Answer

177 / 2.89

rockinhood · Answer

Hypothetically yes, it should be 61, but I think it's deeper because nothing is that easy. 

There is a possibility I'm totally overlooking the obvious though.

rockinhood · Answer

*Overthinking

welshfella · Answer

I'm not sure when credit card company apply the exchange rate . Thay can of corse fluctuate so perhaps $50 is the answer, because its the nearest value to $61

welshfella · Answer

- it does ask for the 'best estimate'.

mathstudent55 · Answer

You called the currency Romanian leu.
Then you use RON.
Are we to assume that RON = Romanian leu?

mathstudent55 · Answer

If we assume that RON = Romanian leu, we are given this:

US$ to RON = 2.89

$\dfrac{US$}{RON} = 2.89$

$\dfrac{US$}{RON} = \dfrac{2.89}{1} $

$US$ = 2.89 \times RON$

$US$ = 2.89 \times 177 = 511.53$

That means it's $511, so the closest answer is $450

rockinhood · Answer

@mathstudent55  I think it's 

1 USD = 2.89 RON

welshfella · Answer

yea i think that's most likely