Answer: 332
Step-by-step explanation:
Given : The percent of sales off this year in July= 20%
Which can be written as 0.20
The sales of coat in last year in July= 415
Let x be the number of coats they sell in this year in July , then the decrease in sales : [tex]-0.20(415)[/tex]
We have the following equation:-
[tex]x=415-0.20(415)\\\\\Rightarrow\ x=415-83=332[/tex]
Hence, the number of coats , they sell this year in July =332 .