SOLUTION: In one day, Sheila received 13 packages.. Federal Express delivered three times as many as Airborne Express, while U.S. delivered 2 fewer than Airborne Express. How many packages

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Question 31011: In one day, Sheila received 13 packages.. Federal Express delivered three times as many as Airborne Express, while U.S. delivered 2 fewer than Airborne Express. How many packages did each service deliver to Sheila?
Answer by checkley71(8403) About Me  (Show Source):
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13=A+3A+(A-2) OR 13=5A-2 OR 15=5A OR A=3 THEREFORE AIRBORNE EXPRESS DELIVERED 3 PACKAGES.
FEDERAL EXPRESS DELIVERED 3 TIMES AS MANY OR 3*3=9 PACKAGES.
U.S. DELIVERED 2 LESS THAN AIRBORNE OR 3-2=1 PACKAGE.
THE TOTAL THEN IS 3+9+1 OR 13 PACKAGES.