exam Maths Puzzle Numerical Ability

How to solve the Geometry problem below?

The measure of 1 angle of a linear pair is 3 times the measure of the other angle. Find the measure of the 2 angles.

I know the answer is 45 degrees, 135 degrees

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exam Other Question

How many yards of material from a 24-yard length of cloth remain after 3 pieces, each 3 1/2 yards long, and 5 pieces, each 2 1/4 yards long are removed? 4 ln x - 1 /4 ln y
Use properties of logarithms to expand the logarithmic expression as much as possible.