Word Translations > Ratios > Q11 P47 Chap 3

[inforr]

Problem Set Question
Alexandra needs to mix cleaning solution in the following ratio: 1 part bleach for every 4 parts water. When mixing the solution, Alexandra makes a mistake and mixes in half as much bleach as she ought to have. The total solution consists of 27ml. How much bleach did Alexandra put into the solution?

Workings
Because we are given the total solution amount (27ml) its possible to calculate the amount of bleach.

Ratio = 1:4
Total amount = x/2 + 4x = 27
x + 8x = 54
9x = 54
x = 6

Hence 6/2 = 3ml

Question - The answer in the book gives it as 3 parts, isn't this a typo and should 3ml?

[StaceyKoprince]

Hi, sorry it has taken us so long to get to your question

I don't have that book handy right now but from what you typed, yes, it should say 3 ml, not 3 parts!