(1) Statement I says the length of one piece is 3.7 m. As this is more than half of the total length, this piece would be the longest one.According to statement II, 0.9 + x +x + 1.5 = 7, x = 2.3 m. So, thelongest piece will be 2.3 + 1.5 = 3.8 m.So, either of the two statements alone is sufficient to answer the problem.