Lisa gave four English tests last week. The score of her fourth test was 8 more than the average score of her first thre

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Lisa gave four English tests last week. The score of her fourth test was 8 more than the average score of her first three tests. How much greater is her fourth test score than the average score of four tests?

A. 2
B. 4
C. 6
D. 8
E. 10

Answer: C

Source: e-GMAT
Source: — Problem Solving |