exam Maths Puzzle Numerical Ability

A freight train left a station at 12 noon going at a rate of 50 miles per hour. At 1 pm, a passenger train left the same station going south at the rate of 60 miles per hour. At what time were the trains 270 miles apart?

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exam Other Question
The second angle of a triangle is 4 times as large as the first. The third angle is 45 degrees less than the sum of the other two angles. Find the measurment of each angle. Rewrite as a single logarithm:
2logx - 1/2log(x^2+1) + 2log(x-3)

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