Question

A pound of grass seed covers 120 square feet of lawn.

How many pounds are needed to seed a lawn measuring 50 by 40 feet (2000 sq ft)?

Answer 1

IS IT 2000/120=16

Answer 2

So we need 1 pound of grass seed for every 120 square feet of lawn. We have a total of 2000 sq feet of lawn to seed. Since we use 1 pound/120 sq ft, dividing the total amount of lawn by the 120 sq ft will give us the number of pounds of grass seed we need.

\[\bf \frac{ 2000 \ \cancel{sq.ft} }{ 120 \ \cancel{sq.ft} }=[ \ \ \ ] \ lbs.\]What goes inside the brackets?

@wheelchairmomof2

Answer 3

17

Answer 4

Correct. So we need 17 lbs of grass seed to cover a 2000 sq.ft lawn.

@wheelchairmomof2

Answer 5

proportion time...
1/120 = x/2000 (1 lb to 120 sq ft = x lbs to 2000 sq ft)
cross multiply
(120)(x) = (1)(2000)
120x = 2000
x = 2000/120
x = 16.6 sq ft

Answer 6

@wheelchairmomof2 Why did you round it off to 17, why not keep at as 16.6?

@texaschic101 Question asks for pounds of grass seed, not sq.ft of grass seed.

Answer 7

are you sure you would put 17 because 17 x 120 = 2040

Answer 8

my bad....lbs of grass seed

Answer 9

16.6

Answer 10

thats what I would put

Answer 11

ok

Answer 12

ty

Answer 13

no problem :)