Question

Sanjay needs 90 meters of fence to go around a rectangular garden.
The length l of the garden is three times its width w.

Three of these equations give the correct value for w.
Which equation does NOT?

equations are:
a)w+3w=90
b)w+3w+w+3w=90
c)2⋅w+2⋅3w=90
d)2⋅(3w+w)=90

Answer 1

Answer:

you have ALL the equations set up, just solve for W.

1.)

w+3w=90

4w=90

w=22.5

2.)

w+3w+w+3w=90

8w=90

w=11.25

3.)

2*w+2*3w=90

2w+6w=90

8w=90

w=11.25

4.)

2*(3w+w)=90

6w+2w=90

8w=90

w=11.25

Now, out of ALL those which one was different?

A. (w+3w=90)

This equation did not match with all the others. Thus, your answer. :D

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