- anonymous

If Dawn's lawn has two areas that are 10ft x 8ft,another area 22 ft x 4 ft,another 6 ft x 15 ft and the last area is 23 ft x 5 ft, what is the square footage of her lawn? If the seed is spread at a rate of 5lbs per 1,000ft^2,and each bag is 2lbs,how many bags will she need to buy?

- schrodinger

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- amistre64

2(10*8) + 22(4) + 15(6) + 23(5) = total area of the yard.
total area/5lbs = x lbs per 1 area.
the last parts I see, but cant right put my finger on it yet :)

- amistre64

(total area/1000) times 5 should be the amount of lbs of seed she needs

- amistre64

once you know the total amount of seed required, figure out how many 2lb bags will do it ;)

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- anonymous

Thanks!

- anonymous

So,.45385= 2,265......then what?

- amistre64

....45385 = which part?

- anonymous

.453 multiply by 5 gave me 2,265 I'm still not sure how many bags of seeds

- amistre64

2(10*8) + 22(4) + 15(6) + 23(5)
160 + 88 + 80 + 115 = 160443 right?

- amistre64

443...calculator lied to me lol

- anonymous

I have 453

- amistre64

your right, 15(6) = 90...tried that in my head

- amistre64

453/1000 = .0453 right? i tried that in my head too :)

- anonymous

yes

- amistre64

so she has less than 1000 ft^2 acres, so she needs less then 5lb of seeds...

- amistre64

she has 4.53% of 1000 ft^2 so I would assume she only needs 4.53% of 5 lbs of seeds.... let me check that...

- anonymous

It's asking how many bags will she need to buy.

- amistre64

you got any multiple choice answers to pick from?

- anonymous

nope

- amistre64

you got that 1000 ft^2 right? or is that spose to be 100ft^2 ?

- anonymous

The first part is right 1000

- amistre64

the total square footage of her yard has to be the sum of the parts..... and we did that right :)
10(8) + 10(8) + 22(4) + 6(15) + 23(5)....cant change that

- anonymous

Well,you said that it's 5 lbs that she'll need ...so each bag being 2 lbs,then would that be 21/2 bags?

- amistre64

it says she uses 5 lb seeds to do 1000 ft^2....she only has 453 ft^2 right?

- amistre64

so for every ft^2 she uses how many lbs of seed?
5 x
------ = ----- should be the ratio
1000 1

- amistre64

or:
5 x
------ = ----- should be an equal ratio as well
1000 453
5(453)/1000 = 2.265 lbs

- anonymous

Yes,I have those numbers but still don't know the number of bags of seeds to buy.

- amistre64

she needs 1 bag and a a little more..so if she buys 2 bags total, she should be able to do it.

- amistre64

or 1.1325 bags if theyll let her ;)

- anonymous

So do you think that the answer should be 2 or 1 and a half?

- anonymous

hahaha! That's funny!

- amistre64

if they want an integer answer, I would say 2; if they want a precise anwer, I would go with 1.1325 bags

- anonymous

O.k.,that's helpful.Thanks!

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