Percentage to ratio?

Asked by Sapphire_Frenzy (90) October 28th, 2012

(This may seem like a very stupid question, however I just want to lay the ground work to make sure I’m doing this right)

If I want to express 20% of one thing, and 80% of another thing as a ratio, am I right in thinking it would be expressed as 1:4?

Thank you.

Observing members: 0 Composing members: 0

It would help if you gave an example, to ensure it makes sense, as is seems weird to compare different percentages of different things as a ratio.

ben (8138)

A man has a fungal nail infection but doesn’t like to take medication. He is advised by his doctor of homemade remedy consisting of 20% Clorox bleach to 80% water. Express this as a ratio.

I have to apply ratios to physics, biology and chemistry

Yep, that’s right.

Reason it makes sense is the ratio expresses the relationship between parts of the same thing.

ben (8138)

Yes, it is 1:4, one part bleach, four parts water.

zenvelo (29827)

20% = 20/100
80% = 80/100

20% : 80% = 20/100 : 80/100 = 20 : 80 = 1 : 4

dabbler (15399)

or