Question 460281
Let x be the total amount of her order
Cost of mixing vats=400
No of mixing vats =y
Sales tax = 6%
Total cost of mixing vats = 400y
THen equation:
6%(400y)+400y=x
{{{(6*400y)/100}}}+400y=x (note that i have replaced 6% by 6/100)
6*y+400y=x
6y+400y=x
406y=x
y=x/406