Banknotes

$ 1390 was collected. How much was in $20 notes and how many in $50 notes in that order? How many solutions exists?

Correct answer:

n =  3

Step-by-step explanation:

1390=20x+50y x1=62,y1=3 x2=57,y2=5 x3=52,y3=7 n=3



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