Agriculture: Farmers use Fertilizers imported from China and each bag of fertilizer (20 kg) is marked the direction how to use the fertilizer and the unit is given in terms of Kilograms per hectare(kg/ha). In United States it is customary for farmers to use the unit in terms of pounds per acre(lb./A) (1 Lb./ac = 0.892 kg/ha) a) How many bags of fertilizers are needed if the farmer had done cultivation in 20 acres land? Challenge: b) The direction in the bag say 240 grams of fertilizer can be mixed with 1 Liter of water for spraying. How will the U.S. farmer use this direction if he uses Lb. and gallons? (1 U.S. gal =3.79 LB, 100 grams = 0.22 LB)