## Elementary Technical Mathematics

10 Gallons contain 2lb of Pesticide First, obtain the amount of pesticides in a single gallon by dividing both values by ten. 1 Gallon will contain $2\div10=0.2$lb Pesticide You can now obtain total amount of pesticide powder in 400 Gallons by multiplying both values by 400 400 Gallons will thus contain $0.2\times400=80$lb