Please help with 6st grade math q!?

Question

2 patches of grass on field are 9x 12 feet. One bage of grass seed covers 15 yards. How many bags will be needed to cover field with grass seed? Oh and how we get this would be wonderful.
Thanks!

Answer 1

I sense flaws in the question.

Yards raised to the first power only represent length, so something that takes up an area can never be written with units that only represent length.

Also, 2 patches of grass are 9 x 12 feet. Is that 9 x 12 feet each or they add up to 9 x 12 feet together?

It is impossible to answer the question by relying on 15 yards, but we can rely on 15 square yards.

Without change any part of the question except changing the unit yards into square yards here's how we do the problem:

9 ft * yd /3ft = 3yds

12ft * yd/3ft = 4yds

Area of Field = 12 yd^2

15yd^2 (x) = 12yd^2

x = 12/15

x = 4/5

You need 4/5 of a bag, which I assume you can say 1.

If it is 2 patches of grass each, which isn't what your problem stated.

Area of Grass = 24yd^2

bags = 24yd^2 / 15yd^2 = 24/15

bags = 8/5 or you can probably say 2.
______________________________

To people that suffer from units, which only excludes Ironduke.

There are those that are aware of the units, but you're not doing the correct thing to change the units.

When you multiply 9 and 12, then divide by 3.

You are only changing 1 on the lengths.

This is because multiplication isn't distributed. In other words, the area of your field is 3 things it's normal size.

To those that ignore the units. You fail as mathematicians because feet is not a yard.

Answer 2

First you find the area in feet:
9ft. x 12ft. = 108ft.

Then divide 108 by 3 because 3ft. = 1 yard. Your answer should be 36.

So now we know the patches are 36 square yards.
Divide 36 by 15 (because that's how much the bag covers) and you get 2.4 - then you round up.

The answer is 3 bags.

Answer 3

9 feet by 12 feet = 3yards by 4 yards = 12 yards^2
You have two such patches so you have 2*12 = 24 yards^2
You will need 24/15 = 1.6 bags.

So you need 2 bags and will have 2/5 of a bag left over

Answer 4

so you have a field of 9 x 12 ft

multiply 9 x 12 = 108 sq. ft. (Area)

then you have seeds that can cover 15 sq. yards

so convert Yards to Feet 1 yd. ~ 3 ft

so 15 yd. x 3 ft = 45 sq. ft of grass seed


now that you have the areas
area of 2 patches/area of grass seed covers:

108 sq. ft./45 sq. ft = 2.4 bags

(you can't just divide the units if they aren't the same, feet. divides feet. NOT feet. divides yard.)

ANSWER:
2.4 bags

Answer 5

one patch of grass is 9 by 12 which is 108feet squared
u times it by two which is 216
u then take 216 and divide by 15. it comes out as14.42 but u can't really have .4 of a bag so it is 15 bags
ans=15 bags required :D
i tink....

Answer 6

the area of the two fields is 108 you just devide the 15 into 108 and multiply by two because you have two fields you get

14.2 bags

Answer 7

9 times 12 is 118. 118 feet equals 39.3 repeating yards. so, you need 3 bags.

Answer 8

your not even old enough to have a yahoo answers account! ps the answer is 8

Answer 9

i think 7.2 bags


the bored guy is right. you can't have 7.2 so its 8bags

Answer 10

3.2