Answer:
B. $497,000
Step-by-step explanation:
Consolidated Balance of Equipment
Excess value at the acquisition $110,000
($350,000-$240000)
Book value as on Dec 31 2018 of Ford $170,000
Book value as on Dec 31 2018 of Regent $250,000
Less: excess depreciation -$33,000 ($110,000/10*3)
Consolidated balance of equipment $497,000