exam Maths Puzzle Numerical Ability

Can anyone help me out with this one? It is Systems of Equations. Solve.

During summer vacation, Hector and Ann earned a total of $1088. Hector worked 8 days fewer than Ann a

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exam Other Question

P=2x+2w for x 8. Alexandra and Frank can assemble a swing set working together in 6 hours. One day, when Frank called in sick, Alexandra was able to assemble a swing set in 10 hours. How long would it take Frank to assemble a swing set if he worked by himself?