2. Type B washing machine has more 500 yuan than Type A, so the price of Type B is 2700÷2+500÷2= 1600 yuan.
The price of model A is1600-500 =1100 yuan.
Actual payment made by Xiao Wang1600 (1-13%) =1392 yuan.
What Xiao Wang actually paid was1100 (1-13%) = 957 yuan.
2.- 10-8 ÷(-2)×(- 1/4)
=- 10+4×(- 1/4)
=- 10- 1
=- 1 1
(-24) × ( 1/4- 1/3+5/8)+(-2)?
=(-24)×(6/24-8/24+ 15/24)+4
=(-24)× 13/24+4
= - 13+4
= - 9