Total height of (A + B + C) = (155 × 3) cm = 465 cm …(1) Total height of (B + D + E) = (155 × 3) cm = 459 cm …(2) Adding (1) and (2), A + 2B + C + D + E = 924 cm So to find the answer, B’s height must be known which is not given. ∴ The data is inadequate.