Question

How tall is the table?

Answer 1

Answer:

105cm

Step-by-step explanation:

Call the rat's height r, the cat's height c and the table height t.

The left part says that

(t + c) - (0 + r) = 120 = t + c - r

c - r = 120 - t

Right part says that (t + r) - (0 + c) = 90 = t + r - c

c - r = t - 90

120 - t = t - 90

2t = 210

t = 105