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jmc

algebra junior

Problem

Berengere and her American foreign-exchange student Emily are at a bakery in Paris that accepts both euros and American dollars. They want to buy a cake, but neither of them has enough money. If the cake costs 6 euros and Emily has an American five-dollar bill, how many euros does Berengere need to contribute to the cost of the cake if 1 euro = 1.25 USD?
Solution
The easiest way to solve this problem is to convert everything into euros. Emily's five-dollar bill is equivalent to . Since the girls need 6 euros between them, Berengere must contribute .
Final answer
2 \text{ euros}