Question

On june 23, 2010, the value of the euro was 1.31 compared to the u.s. dollar. this meant that an american paying $100 for a product in the united states would be asked to pay ______ euros for the same product while traveling in europe.

Answer 1

The answer is 131 Euro.
the value of the euro was 1.31 compared to the u.s. dollar, it means
1 Dollar = 1.31 Euro
So, the ratio is
dollar : Euro
1 : 1.31
multiplying 100 on both sides
1 x 100 : 1.31 x 100
Now 100 dollars = 1.31 x 100 = 131 euro