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What is the value of the greater of two numbers if one of the numbers is twice the other number?
(1) One number is 5.
(2) The sum of the two numbers is 15.
If x + y = 3, what is the value of xy?
(1) x and y are integers
(2) x and y are positive
What is the average (arithmetic mean) of a, b, and c ?
(1) a + 2b + 3c = 10
(2) 3a + 2b + c = 14
Joan spent $10 to buy at least one piece each of apples and oranges at a store where each apple cost $2 and each orange cost $1. How many apples did she buy?
(1) She spent more than $6 on buying oranges
(2) She spent less than $10 on buying oranges
If x = 3a and y − x = 4a, then what is the value of y ?
(1) x = 12
(2) y − x = 16
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