exam Maths Puzzle Numerical Ability

if the measurement of angle JUC= The measurement of angle IUE, then the measurement JUI=the measurement of angle CUE

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How many liters of a 10% alcohol solution must be mixed with 70 liters of a 90% solution to get a 30% solution?

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Our galaxy is estimated to be 5.6 x 10^19 mi across. How long (in hours) would it take a spaceship to cross the galaxy traveling at 37,500 mph.