Answer:
21,316! hope that helps lol
This is not my work but i hope this can help you with your problem
https://answers.yahoo.com/question/index?qid=20120518194118AAhi738
In 4 years you pay interest of 4000 and if you finish pay the loan in two years you pay only 2000
Ay/x = cz
Multiply 'x' to both sides:
Ay = czx
Divide 'A' to both sides:
y = (czx)/(A)
Here's a photo of the solution. Hope this helps and please give brainlist!