Question

The length of a field is 3 times its width. If the perimeter (distance around the field) of the field is 312 feet, what is the width of the field?

Answer 1

Any ideas?
:-)

Answer 2

Let w = the width of the field in feet

Answer 3

umm 3w=312?

Answer 4

Nope.

Then

The length of a field is 3 times its width.

means 3•w = length of the field

Answer 5

Does that^ make sense?

Answer 6

yeah

Answer 7

Recall the formula for the perimeter of a rectangle is P = 2l + 2w

Answer 8

okay

Answer 9

what would be the width ?

Answer 10

The length of a field is 3 times its width. If the perimeter (distance around the field) of the field is 312 feet, what is the width of the field?

P = 2l + 2w

312 = 2( 3•w ) + 2w

Answer 11

where'd you get the two

Answer 12

Which 2?

Answer 13

2(3*w)

Answer 14

wy do you multiply it by 2

Answer 15

It is in the formula right above it.

Answer 16

P = 312 and l = 3•w

Answer 17

oooh stupid me haha okay now I get it

Answer 18

Now, solve the equation for w.

Answer 19

I got 76.5

Answer 20

2*3*w = 6*2w?

Answer 21

ooh no 6w+2w= 8w so 312/8= 39

Answer 22

thanks :)

Answer 23

Great job :D

Answer 24

Don't forget the units of feet on your answer.