Book Maths Puzzle Age Problem

Sarah is 8 more than 2 times as old as Brad. In five years the sum of the ages will be 69. How old is Brad?

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Book Other Question

The average temperature for four days was 22degrees. what must the temperature be on the fifth day in order to make 23degress the average temperature for the five days What is the answer to 2x^2 -3x +15 equal?