exam Maths Puzzle Numerical Ability

A coordinate grid is placed over a map of Pineville. The police department is located at (-12,7) and the fire department is located at (-6,6). What are the coordinates of the town hall, which is located halfway between the police and fire deparments?

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A sweater is on sale for $25.42. The sale price represents a 15% discount. Find the original price of the sweater and the amount saved during the sale. Lucy has some money invested at 18% annual interest and three as much invested at 12%. Her total annual income from two investments is 2200pesos. How much was invested at each rate