Question

Point D is on segment BC. Segment BC measures 8x units in length.

Answer 1

Line BC = Line CD + Line DB
$8x=3x+8+4x+10$
$8x=7x+18$
$8x-7x=18$
$x=18$

Hence, length BC = 18×8 = 144

Answer 2

Answer:

144 units

Hope it helps