Pesticide Calculations in Horticulture

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Q1. How many pounds of active ingredient are there in a 30-pound bag of a 50WP pesticide?
"WP" refers to wettable powder (a dry pesticide formulation)
Q2. A 10G herbicide is to be applied at a rate of 2 lb. of product/1000 sq. ft. to 12,000 sq. ft. of lawns.
a) How much of the herbicide is needed?
"G" refers to granules (a dry pesticide formulation)