Answer:
Php 770.00
Explanation:
The cost of labor is ...
(hours) × (hourly rate)
= (3 h) × (Php 150.00/h) = Php 450.00
The total cost is ...
total cost = cost of labor + cost of parts
= (Php 450.00) + (Php 320.00) = Php 770.00
Randolf owes Mr. Solidarios Php 770.00 for the repair.