The amount of chlorine in a swimming pool is proportional to the volume of water. The pool has 2.5 milligrams of chlorine per liter of water. There are 8000 gallons of water in the swimming pool. How much chlorine is in the pool? Round to the nearest thousand milligrams.

There are 20,000 milligrams chlorine in the pool.

Step-by-step explanation:

Given:

The chlorine per liter of water in the pool is 2.5 milligrams.

The  volume of water in the swimming pool is 8000 gallons.

Now, to find the quantity of chlorine in the pool.

Let the quantity of chlorine be

The gallons of water in the swimming pool = 8000.

The milligrams of chlorine per liter of water in the pool = 2.5.

According to question, the amount of chlorine in the swimming pool is proportional to the volume of water.

So, 2.5 mg of chlorine is equivalent to 1 liter.

Thus, is equivalent to

Now, to get the quantity of chlorine by using cross multiplication method:

By cross multiplying we get:

Therefore, there are 20,000 milligram chlorine in the pool.

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3