Question

A certain bleach is 5% active ingredients. In 10 gallons of this bleach, how much is active ingredients?

0.05 gallons
0.5 gallons
5 gallons

Answer 1

To answer determine the amount of active ingredients of the bleach (Ai), multiply the given concentration (C) with the volume (V)
Ai = C x V
Substituting the known values,
Ai = (0.05) x (10 gallons)
Ai = 0.5 gallons
Therefore, the answer is 0.5 gallons.

Answer 2

It is 5% active, so if we have 10 gallons, the active ingredients would be 5% of 10.

5% of 10

= 0.05 * 10 = 0.5

0.5 gallons.