2 1÷4×2/7
=2 1/4×2/7
= 1.5 (flowers)
The Hangzhou Bay Bridge built in China is the largest bridge in the world, with a total length of 36 kilometers. In the process of bridge construction, due to technical innovation, the whole bridge construction was completed in only 43 months, 6 months ahead of the original planned construction period. What percentage is the actual construction period ahead of schedule? (Keep one decimal place before the percent sign)
6÷(43+6)
=6÷49
≈ 12.2%