book Maths Puzzle Numerical Ability

-5to the 4th power

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Angle ABC and angle DEB are vertical angles. Angle ABC = (4x + 50) degrees, and angle DEB = (2x + 60) degrees. Find x. 1) Twice a number x increased by 12 is 31 less than three times another number y. solve for x

2) Five eighths of a number x is three more than one half of another number y. solv