exam Maths Puzzle Numerical Ability

the measure of angle j is half of its compliment plus 12 degrees

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exam Other Question

help in simplifying complex fractions is needed please:
2/a + 1/2a / a + a/2
Two cars leave towns 230 km apart at the same time, traveling directly toward one another. One car travels 15km per hr slower than the other. They pass one another 2 hours later. What are their speeds?