Real-Life Math -- Solution
You are a crop sprayer figuring out how much pesticide you need
to cover a field. This is what you calculate:
1. Figure out how many
acres you cover in this field.
Acres covered = number of swaths
x field length x swath width / 43,560 square feet per acre
Acres covered
= 40 swaths x 1,500 feet long x 30 feet wide / 43,560 square feet per acre
Acres
covered = 60,000 x 30 / 43,560
Acres covered = 1,800,000 / 43,560
Acres
covered = 41.32
You will be covering 41.32 acres in this field.
2.
How many pounds of material will you need if you use 20 pounds per acre?
Pounds
of material = acres covered x pounds per acre
Pounds of material = 41.32
acres covered x 20 pounds per acre
Pounds of material = 826.4
You
will need 826.4 pounds of material to cover this field.