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Xavier (x) has $20 more than Sara (s). Their combined money totals $90. Which system of equations represents this situation?
a)
x + s = 90 s + x = 20
b)
x + s = 90 x - s = 20
c)
x - s = 90 s + s = 20
d)
s - x = 90 x - s = 20

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Answer:

B) x + s = 90, x - s = 20

Step-by-step explanation:

x + s = 90 represents that both Xavier and Sara's money combined is $90.

x - s = 20 represents that Xavier has 20 more dollars than Sara.

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