Alligation calculator

Enter your values. The answer and the full worked solution update as you type.

Result

Amount of the higher strength233.3 same unit as the total

Amount of the lower strength266.7 same unit as the total

Parts (high : low)7 : 8

Step-by-step solution

Alligation grid

parts of higher strength = 12 − 5 = 7

parts of lower strength = 20 − 12 = 8

Amounts

500·7/15 = 233.3

500 − 233.3 = 266.7

Key formulas

Alligation: parts of H = T − L, parts of L = H − T
Percentage strength: % w/v = g per 100 mL

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