Calculate 45 liters in 6 minutes

Step by step

The question

Question: 45 liters in 6 minutes.

How many liters in 1 minute?

A unit rate tells us how much for just 1.

Here: liters for 1 minute.

1 Write it as a fraction

We write it as a fraction.

The liters go on top.

The minutes go on the bottom.

2 Divide to get 1 at the bottom

We want 1 minute on the bottom.

6 divided by 6 is 1.

We divide the top by 6 too, so the rate stays the same.

45 divided by 6 is 7.5.

So it is 7.5 liters for 1 minute.

Per means for each.

So the unit rate is 7.5 liters per minute.

3 Check

Let's check: 6 minutes at 7.5 liters per minute.

6 times 7.5 is 45.

That is 45 liters, so it is right!

Let's look back.

First: write it as a fraction.

Then: divide to get 1 at the bottom.

Last: check.