It took six days to build a highway, which was 140 meters above the midpoint. The rest continued to be built at the original speed, and it took another five days to complete. How long is the road?

It took six days to build a highway, which was 140 meters above the midpoint. The rest continued to be built at the original speed, and it took another five days to complete. How long is the road?

I'm similar to him
140÷(6÷11-1÷2)
=140×22
= 3080 (m)
A: the total length of this highway is 3080 meters