In this issue, we should grasp the equality of these parts and establish an equal relationship.

Set the original plan to be completed within x hours.

The equation is established as:

10x-3 = 1 1(x- 1)

Solution x=8

These parts are: 10×8-3=77.

This batch of 77 parts will take 8 hours to complete according to the original plan.

Wenbo Education Yongchuan Campus: 023-86622464, QQ: 2422362928 Address: 4th Floor, Xinyuan Lawyer Building, Old Gymnasium.

Wenbo Education Yubei Campus: 023-866220 1 1 Address: 5th Floor, Yuhang Mall, Yubei District.