If Mr. Wang gets 2400 yuan, he should pay 224 yuan; if Mr. Wang gets 4000 yuan, he should pay taxes in 440 yuan.

2.( 1) If the tax rate is 14%, then:

(Y-800)* 14%=420

0. 14y- 1 12 = 420

0. 14Y=532

Y=3800 yuan

(2) If the tax rate is 1 1%, then

Y* 1 1%=420

Y = 38 18 yuan. When the payment fee is higher than that in 800 yuan but lower than 4,000 yuan, the tax rate should be 14%, so this assumption is not valid.

To sum up, if Mr. Wang pays taxes to 420 yuan after receiving the payment, the payment will be 3,800 yuan.