Question

A barbell in the weight room weights 45 pounds. If 1 pound is equal to .45 kg, how many kg is in the barbell?

Answer 1

the barbell weighs 20.25 kg

Explanation:

It's quite easy to find the answer! All you have to do is multiply .45 kg by 45!

so the equation would be:

0.45 x 45 = 20.25

hope this helps you!! <3

Answer 2

20.25 kg

Explanation:

Set up a proportion, where x is the number of kg in the barbell

`(1)/(0.45)` =
`(45)/(x)`

Cross multiply:

x = 45(0.45)

x = 20.25

So, there are 20.25 kg in the barbell