exam Maths Puzzle Numerical Ability

adrian purchased 20 ballet tickets for a total of $1110.How much would it have cost him for 150 ballet tickets solve using both the rate and proportion methods

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exam Other Question

the mesaure of the supplement of an angle is 20 degrees more than three times the measure of the original angle. Find the measures of the angles. Explain why 2 to the -3 power equals to 1 over 2 to the 3 power?