Question

Mitchell travels from the US to Canada, where he exchanges 150 US dollars for Canadian dollars. He then spends 20 Canadian dollars, returns to the US, and exchanges the remaining money back to US dollars. How many US dollars does Mitchell have remaining?

Answer 1

As 1 us dollar is equal to 1.3 Canadian dollar, Mitchell has spent 20 into 1.3 US dollars, I.e. 26 us dollars.
so, he has 150-26 us dollars remaining.
124 US dollars are remaining.