After adding 45% to a number we get 507.5 what was the number?​

The number is   x = 507.05

Step-by-step explanation:

Step(i):-

Let 'x ' be the number

Given that adding 45% to a number and we get  507.5

Now, it can be written as

                   x + 45% = 507.5

Step(ii):-

The equation  

                  x + 0.45 = 507.5

subtracting '0.45' on both sides, we get

                 x = 507.5 - 0.45

                x = 507.05

Final -

The number is   x = 507.05

answer: she must produce at least 9,000 windows in order to make a profit of $48,000

explanation:

48,000 - 12,000 = 36,000

36,000/4 = 9,000

step-by-step explanation:

try remembering the steps