2.25/12.50 = 0.18. then turn 0.18 into a percentage by doing 0.18 x 100 = 18%. Therefore, he gave an 18% tip.
It causes the breakdown and decay to the rocks. It occurs when the weather water is slightly acidic.
To solve this, we are going to set up a simple rule of three: If 20% are 48 cars, 100% how many cars will be:

Now, we can express this as a proportion ans solve for

:


We can conclude that there are 240 cars in the parking lot.
The answer to the equation is X=1/5