Answer: she used 5.88 pints of white paint
Explanation:
Kimberly uses 9.8 pints of blue paint and white paint to paint her bedroom walls. If 2/5 of this amount is blue paint, it means that the amount of blue paint that she used in painting her bedroom walls is
2/5 × 9.8 = 3.92 pints of blue paint.
Therefore, the pints of white paint that she used to paint her bedroom walls is
9.8 - 3.92 = 5.88 pints of white paint