Based on the beginning and ending raw materials inventory and the cost of raw materials, the amount of direct materials used was $387,000.
This can be found by the formula:
= Beginning raw materials + Purchases of new raw materials - Ending raw materials
Solving gives:
= 80,000 + 407,500 - 100,000
= $387,000
Find out more on direct materials at https://brainly.com/question/26371619