Final answer:
Paul should use $10,000 for his garage if he wants to have enough coverage to repair his home completely.
Step-by-step explanation:
To repair his home completely, Paul needs coverage for the full amount of the damage, which is $190,000 for his home. Since his Dwelling Form flood policy has a limit of $200,000, he should use $190,000 for his home.
For his garage, the damage is $18,000. Since the policy limit is $200,000, he can use the remaining amount of coverage, which is $200,000 - $190,000 = $10,000 for his garage.
Therefore, Paul should use $10,000 for his garage if he wants to have enough coverage to repair his home completely.