(20 1 1. Wenzhou, Zhejiang) Before the flood season comes, Binhai District decided to implement the "seawall reinforcement" project. An engineering team contracted the project and planned to reinforce 60 meters every day. First, according to the meaning of the question, indicate the actual number of meters per day to strengthen the dam, and then indicate the number of days needed and actually used to strengthen the dam, so that we can get the number of days when the actual time to complete the whole task is less than the original planned time.

Solution: From the meaning of the problem, the actual daily reinforcement of the dam is 60× 1.5=90 (m).

The number of days required to reinforce the dam originally planned: 60 days,

The number of days actually used is: 90% a,

So the actual time to complete the whole task is less than the original planned time: A = 65438, A = 60-A, A = 080,

A: The actual time to complete the whole task is less than the original planned time 1.80 days.