Question 470868
let the first piece be x of length
let the second piece be 2x of length
let the third piece be 2x+5 of length
total length = 60
x+2x+2x+5=60
5x+5=60
5x=60-5
5x=55
x=55/5
x=11

length of 1st piece = 11
length of 2nd piece =22
length of 3rd piece =27

counter check
11+22+27=60