Answer:
Maria had 105 beads
Step-by-step explanation:
Let x the number of beads Maria had
Let y the number of beads Farida had
We know because of the problem that
x + y = 250
x -18 = 3/5* y
x -3/5*y = 18
We solve this system of equation with a graphing tool
(intersection of both lines)
Answer
x = 105
y = 145
