The instructions on the Ortho Weed-B-Gon lawn killer indicate that to cover 1000 square feet (ft2) of lawn, 20 teaspoons (tsp) of the weed killer should be mixed in 5 gallons (gal) of water. Ron Haines wishes to spray his lawn with the weed killer using his pressurized sprayer.

a) How much weed killer should be mixed with 8 gal of water to get a solution of the proper strength? also a) How much weed killer is needed to cover an area of 2820 ft2 of lawn?

Question

Giles

Mathematics

27 January, 08:05

The instructions on the Ortho Weed-B-Gon lawn killer indicate that to cover 1000 square feet (ft2) of lawn, 20 teaspoons (tsp) of the weed killer should be mixed in 5 gallons (gal) of water. Ron Haines wishes to spray his lawn with the weed killer using his pressurized sprayer.

a) How much weed killer should be mixed with 8 gal of water to get a solution of the proper strength? also a) How much weed killer is needed to cover an area of 2820 ft2 of lawn?

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Answers (1)

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Braeden Sims · Answer 1

A) q / (8 gal) = (20 tsp) / (5 gal)

... q = (8 gal) / (5 gal) * (20 tsp) = 32 tsp

b) q / (2820 ft^2) = (20 tsp) / (1000 ft^2)

... q = (2820 ft^2) / (1000 ft^2) * (20 tsp) = 56.4 tsp

(That's 1 cup + 8.4 tsp.)