book Maths Puzzle Numerical Ability

how do you make this a negative exponents 7/cd

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The supplement of an angle is 20 degrees larger that the angle. Find the measure of the angle. Thanks for the help! ALice changes size several times. The ration of her original height to her second height is 24 to 5. The ratio of her second height to her third height is 1 to 12. The ratio of