It’s going to be 400 dollars, 20percent is 100 dollars
You would use, Order of Operations, A.K.A PEMDAS.
Parenthesis, Exponets, Multiplication, Division, Addition, Subtraction
Follow that order and you do the work yourself, you would never learn by asking other's for the answer. >:)
From: Dark Angel
No, 9/12 is equivalent to 3/4.
Hope this helps.
Answer:
This is not a dating app.
This might be wrong, but I think it's 15. Again, sorry if I'm wrong.