Subtract 153-63=90 and I am pretty sure that's what you have to do
Answer:
The system of equations in standard form is equal to


The number of ounces of perfume A is 
The number of ounces of perfume B is 
Step-by-step explanation:
Let
a-----> the number of ounces of perfume A
b----> the number of ounces of perfume B
we know that
-----> equation A

-----> equation B
substitute equation B in equation A and solve for b





Find the value of a
-----> 
Fifty-two and eighty-sixth hundredths.