The first time a rope is used up to 1 / 3 of its total length, and the second time it is used up to two fifths of its total length. At this time, the rope is still 16 meters long. How many meters is the rope?

The first time a rope is used up to 1 / 3 of its total length, and the second time it is used up to two fifths of its total length. At this time, the rope is still 16 meters long. How many meters is the rope?

Suppose there were x meters
Then X-1 / 3 * X-2 / 5 * x = 16
The solution is x = 60
The original length is 60 meters