For a rope, two fifths of the total length will be cut off in the first time, and the remaining three fourths will be subtracted in the second time. A total of 17 meters will be cut off in the two times. How many meters is the total length of this rope? It's urgent!

For a rope, two fifths of the total length will be cut off in the first time, and the remaining three fourths will be subtracted in the second time. A total of 17 meters will be cut off in the two times. How many meters is the total length of this rope? It's urgent!

Total length x m
The first cut left 3 / 5x meters
Cut 9 / 20x meters for the second time
9/20x+2/5x=17
Then the total length x = 20