Question

which of the following is equal to 10% concentration? 10:10,000 1:10 5:200 20:1000

Explanation:

Step1: Convert ratio to percentage

For a ratio \(a:b\), the percentage is \(\frac{a}{b}\times100\%\)

Step2: Calculate each option

• For \(10:10000\): \(\frac{10}{10000}\times100\% = 0.1\%\)
• For \(1:10\): \(\frac{1}{10}\times100\% = 10\%\)
• For \(5:200\): \(\frac{5}{200}\times100\% = 2.5\%\)
• For \(20:1000\): \(\frac{20}{1000}\times100\% = 2\%\)

Answer:

\(1:10\)