2, 400* 1.05=420 420/600=0.7, so 30% off!
3. A 2190+365 *10 * 0.4 = 3650 (yuan) b 2190 *1+365 * 0.55 */kloc-.
3650X & lt= 32 12 X & lt； =0.88
4. The actual price is1.25a * 0.92 =1.15a1.15a-a = 0.15a (yuan).
5.0.8 times =300+ 100
6. 1.4X * 0.8-X = 15 X = 125
7.0.0225X=45 X=2000
8.( 1-0. 18)X = 25 X = 30.4878
As long as you get the question right, the answer is right. Please remember to give me gold coins for urgent use! ! ! thank you