Question

Find the length of RW

Answer 1

Answer: First option

`RW=54`

Explanation:

Notice in the image that the distance from R to C is equal to 126.

Then we write:

`RC = 126`

Also note that the distance between W and C is 72.

We know that:

`RC=RW + WC`

In this case we want to find RW, so we solve the equation for RW

`RC-WC=RW + WC-WC`

`RC-WC=RW`

`RW=RC-WC`

Now we substitute the values of RC and WC into the equation

`RW=126-72`

`RW=54`

Answer 2

A 54

Explanation:

RC = 126

WC = 72

RC = WC + RW

126 = 72+RW

Subtract 72 from each side

126-72 = 72-72+RW

54 = RW