Baidu gives you the answer = too lazy to do it yourself.

1、

Solution: Set the price of the coat to X yuan.

1700×90%- 1400-(80% X-300)= 70

130-0.8X+300-70=0

0.8X=360

X=450

The price of this coat is 450 yuan.

2、

Solution: suppose that the number of workers producing round iron sheets is X and the number of workers producing rectangular iron sheets is 42-X.

According to the meaning of the question, the equation can be listed: 120x=2×80(42-x),

Solution: x=24,

Then 42-x = 18.

A: There are 24 people who produce round iron sheets and 18 people who produce rectangular iron sheets.