exam
Maths Puzzle
Numerical Ability
Solve. -3 (10x-3) + 10 (3x-3) = x-7
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exam Other Question
Simplify 4x [(7x2 + 2x - 5) + (3x2 + 9x)/3x
How many liters each of a 2% salt solution and an 10% salt solution must be combined to produce 30 liters of a 4% salt solution?