exam Maths Puzzle Numerical Ability

If a tree is 16 ft. tall and the tree next to it casts a shadow of 20 ft. , what is the height of the second tree?

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exam Other Question

mary brought 32 apples ane oranges to the party. there are twice as many apples then oranges. how many apples did she bring? Solve the following system using the Gauss-Jordan Elimination method:

4x+2y=1
3x-y=2