Study the following table carefully to answer these question:
What was the percentage increase in total sales in 2003 from 1998 ? (rounded off to nearest integer)
Total sales in 1998 = 25 + 45 + 38 + 52 + 47 + 55 = 262
Total sales in 2003 = 43 + 55 + 49 + 63 + 42 + 62 = 314
Percent change = $$\frac{314-262}{262}*100$$ = 19.85% $$\approx$$ 20%
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