exam
Maths Puzzle
Numerical Ability
how is using one ,two or three variables to equations different from each other and how are they the same?
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exam Other Question
10) 3x - y ≤ 6
x ≥ 1
y ≤ 3
How many gallons of an 80% alcohol solution must be mixed with 30 gallons of a 22% solution to obtain a solution that is 70% alcohol?