Hello Amber,
Let A = Alex, B = Bob, and M = Mary.
Then from the first sentence, we have:
A + B + M = 11,000. {Eq 1}
From the second sentence:
B = A + 1,000 {Eq 2}
And from the third sentence, we get:
M = 2A {Eq 3}
By substituting Equations 2 and 3 into Equation 1, we end up with:
A + (A + 1,000) + 2A = 11,000
⇒ 4A +1,000 = 11,000 (by combining like terms)
⇒ 4A = 10,000 (by subtracting 1000 from both sides)
⇒ A = 2,500 (by dividing both sides by 4)
Therefore,
Alex should receive $2500,
Bob should receive $3500, and
Mary should receive $5000.
I hope the above helps. Should you have any questions or comments regarding it, please feel free to message me.
Thank you for posting the question, and have a great evening.
Kind regards,
Michael E.