For a 50-gallon tank that requires 3 pints of EC per 100 gallons, how much EC should you add?

To determine how much emulsifiable concentrate (EC) to add to a 50-gallon tank when the application rate is 3 pints per 100 gallons, we need to first find the equivalent amount of EC for the smaller volume of 50 gallons.

The first step is to establish the EC rate per gallon. Since the requirement is 3 pints for 100 gallons, we can divide 3 pints by 100 gallons to find the amount of EC needed per gallon:

3 pints / 100 gallons = 0.03 pints per gallon.

Next, we can find out how much EC is needed for a 50-gallon tank by multiplying the per-gallon rate by the tank size:

0.03 pints per gallon × 50 gallons = 1.5 pints.

Thus, the correct amount of EC to add to the 50-gallon tank is 1.5 pints. This calculation ensures that the proper concentration of the pesticide is achieved in the tank for effective application against pests.