The currency in the eastern Caribbean islands is the Eastern Carribian Dollar. The exchange rate is approximately $1 to 3 Eastern Caribbean Dollars. At this rate how many Carribian Dollars would you get if you exchanged $5.

step-by-step explanation:

abc

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.