exam Maths Puzzle Numerical Ability

how do i express and simplify?
5
over
4cd
plus
11
over
4cd

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exam Other Question

could you please solve this equation using the substitution method and indicate if it is independent, inconsistent or dependent.
Thank you.

x = 1/8y - 1
y = 1/4x + 39 You earn 10% more money at your summer job than your sister earns at her summer job. Does this mean that your sister earns 10% less money than you? Explain your answer.