Math Test Need Help

Question

you have a rectangular area that measures 40 ft (12m) x 300 ft (90 m) If this area will be Fertilized at a rate of 12 lb per 1000 sq ft (6 kg per 100 sq m) how many lbs (kg) of fertilizer will you need?

Answer 1

First you need to find the area of the plot. It is 40 ft. by 300 ft. So the area is 40 x 300 = 12,000 sq ft.

You are using 12 pounds per thousand sq. ft. So divide 12,000 by 1000 to get 12 units of a thousand sq ft. each

(12 pounds per 1000 sq ft) times (12 units of 1000) equals 144 pounds of fertilizer.

Answer 2

In meters, the area is 12m x 90m = 1080 m²

1080m² x 6kg/100m² = 64.8 kg of fertilizer

64,8 kg x 2.205 lbs/kg = 142.9 lbs of fertilizer