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Question

In 2003, the average monthly rainfall in Mathborough was 41.5 mm. In 2004, the average monthly rainfall in Mathborough was 2 mm more than in 2003. What was the total amount of rain that fell in Mathborough in 2004?

Accepted Answer

Since the average monthly rainfall was 41.5 mm in 2003, then the average monthly rainfall in 2004 was 41.5+2=43.5 mm. Therefore, the total rainfall in 2004 was 12 43.5 = 522 mm.