From some petroleum, you can get 30% of paraffin. how much petroleum do you need in order to get 18.75 tons of paraffin?

62.5 tons.

Step-by-step explanation:

Let x be the tons of petroleum.

We have been given that we can get 30% of paraffin from some petroleum.

To find the the amount of petroleum we need to figure out x such that 30% of x is 18.75.

We can represent this information in an equation as:

Let us solve for x.

Let us divide both sides of our equation by 0.30.

Therefore, we need 62.5 tons of petroleum to get 18.75 tons of paraffin.

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk