@cooltechtipz * Height of the man = M
* Height of the parrot = P
M + P = 200
M - P = 170
(M + P) + (M - P) = 200 + 170
2M = 370
M = 185
Now that we know the height of the man is 185 units, we can use the first equation to find the height of the parrot:
185 + P = 200
P = 200 - 185
P = 15