A rope is cut into two pieces. The first piece is 3/5 of the total length. The second piece is 12 meters long. What was the original length of the rope?
Show answer & explanation
Correct answer: D
Explanation
Given:
First piece = 3/5 of the total length
Second piece = 12 meters
Formula:
Total length = First piece + Second piece
Let the total length = x
First piece = 3x/5
Second piece = x − 3x/5 = 2x/5
2x/5 = 12
x = 12 × 5 / 2
x = 30
Original length of the rope = 30 meters