Trent purchases 44 euros worth of souvenirs while on vacation in France. If $1 U.S. = 0.678 euros , find the cost of the souvenirs in US dollars. Round to the nearest cent

Question

texaschic101 · Answer

1/.678 = x/44 ($1 to .678 euro = x$ to 44 euros)
cross multiply
.678x = 44
x = 44/.678
x = 64.896 rounds to 64.90

mathstudent55 · Answer

Here is another approach at a conversion of units.

Since
$1 = 0.678 E, 
then by dividing both sides by 0.678 E you get

$ \dfrac{$1}{0.678 ~E} = 1$

Since multiplication by 1 does not change a number, then

$44 E \times \dfrac{$1}{0.678 ~E} $ is still equal to 44 E, but once we multiply it out, the units change giving us US$.