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An elderly man is 22 years older than his daughter. Fifty years ago the sum of their ages was 34. What are the current ages of the man and his daughter?
23. The sum of the interior angles of a triangle is equal to 180°. The angles are to be identified as angles A, B and C. One of the angles is 20° larger than the smallest angle, and the third angle is 10° larger than the smallest angle. Calculate the size (in degrees, °) of each of the three angles in this triangle.
28. The sum of two numbers is 30. Twice the larger number is 3 less than 7 times the smaller number. What are the numbers?
