# Awesome. Also need help on these two?

##### 2 Answers

So you want to make a

#### Explanation:

Now, by definition,

Now you might think I am being a bit anally retentive by including the units...so in fact I am, but this helps you to self-test the accuracy of your arithmetic...if the calculation gives appropriate units, the method of calculation was probably kosher. It is all too easy to divide when you should have multiplied, and vice versa.

And so filling the units in...

And on rearrangement...

And for

**a)**

Given,

and

**b)**