You are spreading fertilizer on a golf course at the rate of 40 pounds per 10,000 square feet. if the course is 320 acres, how many tons of fertilizer will be needed? how many tons of fertilizer will be needed? round off to nearest whole number. a.)6 b.)28 c.)80 d.)174

An acre has 4840 yd², and since a yard is 3 feet, a (yd)² is (3 ft)², or 3² ft² or 9 ft².

how many ft² are there in an acre?  well, in 4840 yd² there are 4840 * 9 ft².

this golf course is 320 in area, since there are (4840 * 9) ft² in one acre, then 320 acres will be (320 * 4840 * 9) ft².

how many sections of 10,000 ft² are there? well, (320 * 4840 * 9) / 10000.

every 10000 ft² section is getting 40lbs of fertilizer, so the total amount of fertilizer is [ (320 * 4840 * 9) / 10000 ] * 40.

how many tons is that?  well, there are 2000lbs in a ton, thus that'd be
[ [ (320 * 4840 * 9) / 10000 ] * 40 ] / 2000.