Scheme 1: Let the downward adjustment percentage be X6000 (1-x) (1-x) = 4860, and the result is x=0. 1.

The second question (1) 6000x100x0.98 = 588000 (yuan)

(2) 6000x100-80x100 = 592000 (yuan)

58,000 & lt 592,000, so 8.8 discount is more favorable.