畜牧场去年养奶牛240头,今年养奶牛290头.今年比去年多养奶牛百分之几?

问题描述:

畜牧场去年养奶牛240头,今年养奶牛290头.今年比去年多养奶牛百分之几?

(290-240)÷240
=50÷240
≈20.83%

(290-240)÷240×100%
自己算!!!

(290-240)÷240X100%≈20.8%