gilliandooley1002
02.09.2019 •
Mathematics
The price of an article on sale was 70% of the regular price. if the sale price was $28, what was the regular price?
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Ответ:
28=70%
divide both sides by 7
4=10%
times both sides by 10
40=100%
regular price=$40
Ответ:
Where are the equations?? Provide them so we can choose which one of them has both 7 and -7 as a possible value of x