Ohh, whoops. Now i get it. Thanks for explaining :)

It doesn't matter anything. What's the difference between giving 50&25 rather then 3 times 25? yes, maybe its not best effiency possible but its still a 75 alltogether and leaves me with no money left in the cashier. Which means I still can't give a 25 change for the last ticket.
Lets go through the process:

Got 25, now change=25 -> Now i got 125.
Got 25, now change=50 -> Now I got 225
Got 25, now change=75 -> Now I got 325 || 150 & 125
Got 25, now change=100 -> Now I got 425 || 250 || 150 & 225
Got 50, Need to pay back 25
So now Change=75 -> Now I got 325 || 150 & 125
Got 100, Need to pay back 75
So now Change=0 -> Now i got 0 ! No cash at all and it doesn't matter the way you pay.
Got 50, Need to pay back 25
Not enough change!
expected:<[YES]> but was:<[NO]>

There's a problem with the tester of this kata in test 6, Java.
I printed everything and this is what I get:

test6(LineTests)
Got 25, now change=25
Got 25, now change=50
Got 25, now change=75
Got 25, now change=100
Got 50, Need to pay back 25
So now Change=75
Got 100, Need to pay back 75
So now Change=0
Got 50, Need to pay back 25
Not enough change!
expected:<[YES]> but was:<[NO]>

Doesn't make sense. I pass all the other 10 tests except this one. Please fix it.