# Question #b0ef9

##### 1 Answer

That depends on how many pounds you have.

#### Explanation:

Since you didn't specify how many pounds you have, I'll show you how to find the number of micrograms you get in *one pound*.

The first thing to do here is convert pounds to kilograms. You know that

#1color(red)(cancel(color(black)("lb"))) * "1 kg"/(2.20462262color(red)(cancel(color(black)("lb")))) = "0.4536 kg"#

Now all you have to do is convert kilograms to micrograms. To do that, use the fact that

#0.45361color(red)(cancel(color(black)("kg"))) * (10^9mu"g")/(1color(red)(cancel(color(black)("kg")))) = 4.5 * 10^8mu"g"#

So, if you have five pounds, you can use the exact same conversion factors to get you to micrograms

#5color(red)(cancel(color(black)("lb"))) * (1color(red)(cancel(color(black)("kg"))))/(2.20462262color(red)(cancel(color(black)("lb")))) * (10^9mu"g")/(1color(red)(cancel(color(black)("kg")))) = 5 * 4.5 * 10^8mu"g" = 2.3 * 10^9mu"g"#