Answer :
The system of equations that yields the length of the short rope, s, and the long rope, l will be A. s + l = 63 l = 3s
Based on the information given in the question, the equation to use will be:
l = 3s ...... i
s + l = 63 ...... ii
Substitute equation i into ii
s + l = 63
s + 3s = 63
4s = 63
s = 63/4
s = 15.75
l = 3s = 3 × 15.75 = 47.25