Let the original price of fruits be $P$ and the original quantity sold be $Q$.The original income ($I_{original}$) of the fruitseller is $I_{original} = P \times Q$.The prices of fruits increased by 20%, so the new price ($P_{new}$) is:$P_{new} = P + 0.20P = 1.20P$The sale (quantity) decreased by 10%, so the new quantity sold ($Q_{new}$) is:$Q_{new} = Q - 0.10Q = 0.90Q$The new income ($I_{new}$) of the fruitseller is:$I_{new} = P_{new} \times Q_{new} = (1.20P) \times (0.90Q) = (1.20 \times 0.90) \times (P \times Q) = 1.08PQ$To find the percent change in income, we use the formula: $\text{Percent Change} = \frac{I_{new} - I_{original}}{I_{original}} \times 100\%$ $\text{Percent Change} = \frac{1.08PQ - PQ}{PQ} \times 100\%$ $\text{Percent Change} = \frac{0.08PQ}{PQ} \times 100\%$ $\text{Percent Change} = 0.08 \times 100\%$ $\text{Percent Change} = 8\%$Since the result is positive, it is an 8% increase in income.