Problema Solution
A bill for $123 was paid with $5 and $1 notes, a total of 59 notes being used. Find how many $5 notes were used.
Answer provided by our tutors
Let $5 note be x and $1 be y.
So 5x+y=123
And
x+y=59
Subtracting last. Equation from previous one we get
4x=64
X=16