exam Maths Puzzle Numerical Ability

Solve: 2^(2x+1) = 3^(2x+2)

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exam Other Question

Seven times some number added to 4 amounts to -20 added to the product of 3 and the number. A cross - country race covers a course which takes the shape of a triangle, KLM. Runners are to start at K and run 4km due north to a point L.
From L, they are to run 5km