Let RS be denoted as y.
Given that T is the midpoint of RS, this results in RT = TS = 
And W acting as the midpoint of RT, leads to
thus RW = WT = 
Given that Z is the midpoint of WS.
Meaning WZ = ZS = 
Consequently, TZ = TS - ZS = 
However, TZ is defined as x.
Thus, 
y = 8x = RS.
A) Length of RW = 
B) Length of WZ = 
C) Length of RS = y = 8x
D) Length of ZS = WZ = 3x.
An image is provided for clarification.
Let the quantity of driveways shoveled on Sunday be x
For 4 driveways, Kendra charges = 4*11=44
Thus,
143 = 44 + 11x
And this equation models the situation described.
By subtracting 44 from both sides,[
143-44 = 11x
99 = 11x
Dividing both sides by 11 results in
x = 9
Thus, she shoveled 9 driveways on Sunday.
Adam and his dad split the bill in a 2:3 ratio. The dad’s share equals the 3 parts and is £52.20, so one part is 52.20 ÷ 3 = £17.40. Adam’s portion (2 parts) is 2 × 17.40 = £34.80. The total cost is 34.80 + 52.20 = £87.00.