How this calculation works
When the target equals one stock concentration, the entire final mass comes from that stock.
THE FORMULA
High mass = total mass × (target − low)/(high − low)A worked example
A 200-unit mix at 25% uses 100 units each of 10% and 40% stocks.
Good to know
Use mass fractions and assume masses add.
Reference: OpenStax Prealgebra (opens in a new tab) ↗
Read the result
Solve how much of each mixture is needed to reach a target mass percentage.
The primary result is labeled “Mass at high concentration”. Keep the input definitions in view when comparing this result with another method.
Try a related calculation
Use mass fractions and assume masses add.
For a related exercise, try the fraction calculator.
A few questions, answered
How can I check the default inputs by hand?
A 200-unit mix at 25% uses 100 units each of 10% and 40% stocks.
Which rule does this calculator apply?
High mass = total mass × (target − low)/(high − low)