Question

Find the length of RW

Answer 1

Answer:

A 54

Step-by-step explanation:

RC = 126

WC = 72

RC = WC + RW

126 = 72+RW

Subtract 72 from each side

126-72 = 72-72+RW

54 = RW

Answer 2

Answer: First option

$RW=54$

Step-by-step 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

$RW=126-72$

$RW=54$