exam
Maths Puzzle
Numerical Ability
Instructions: solve each system by the eliminsation method.
What is the solution for x-y=4
x-y=-3
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exam Other Question
a chemist needs 130 milliliters of a 79% solution but has only 29% and 94% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
1-x=72