exam Maths Puzzle Numerical Ability

Solve each system of equations. Check by substitution

x - y = 3
x + y = -1

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exam Other Question

The base of a 50 foot ladder is 14 feet from a vertical wall. The ladder slides down so the base is now 30 feet from the wall. How far did the top of the ladder move down the wall? Aliyah had some candy to give to her four children. She first took ten pieces for herself and then evenly divided the rest among her children. Each child received two pieces. With how many pieces did she start?