Answer:
Step-by-step explanation:
Let the height of Maria = M inches
Height of Nancy = N inches
Height of Brad = B inches
Height of Chad = C inches
Since Maria is 11 inches shorter than Nancy,
So, M = N - 11 ------(1)
Brad is 11 inches shorter than his brother Chad.
So, B = C - 11 -------(2)
If Maria is shorter x inches shorter than Brad
Then M = B - x -----(3)
Now we replace the value of M from equation (3) to equation (1)
B - x = N - 11
B = N + x - 11
Now we place the value of B from equation (2)
C - 11 = N + x - 11
C = N + x --------(4)
That reveals that Nancy is shorter than Chad.
If Maria and Brad are of same height, that means M = B or x = 0 [from equation (3)]
From equation (4),
N = C
Heights of Nancy and Chad will be same.
