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Tanya’s bowling scores this week were 112, 156, 179, and 165. Last week, her average score was 140. How many points did her average improve?

A 13

The average is found by adding up all the scores and dividing by the total number of scores. The average this week is (112+156+179+165)/4 =612/4=153. The amount of improvement is 153 – 140 = 13.