How many gallons will a zone with 5 heads at 2 GPM each apply in 30 minutes?

To determine the total gallons applied by a zone with multiple heads over a specific time, you need to multiply the flow rate of each head by the number of heads and then by the time in hours.

In this scenario, each head has a flow rate of 2 gallons per minute (GPM), and there are 5 heads. First, calculate the total flow rate for all the heads combined.

Multiply the flow rate per head (2 GPM) by the number of heads (5):

2 GPM × 5 heads = 10 GPM.

Next, convert the time from minutes to hours for proper calculations. In this case, 30 minutes is equal to 0.5 hours.

Now, multiply the total flow rate (10 GPM) by the number of minutes of operation (30 minutes), which is equivalent to 0.5 hours:

10 GPM × 30 minutes = 10 GPM × 0.5 hours = 5 gallons per minute × 30 minutes = 150 gallons.

Therefore, the correct total amount of water applied is 150 gallons.