养殖场去年养鸡2000只,去年养鸡只数的20%等于今年养鸡只数的2/9.今年养鸡多少只?

问题描述:

养殖场去年养鸡2000只,去年养鸡只数的20%等于今年养鸡只数的2/9.今年养鸡多少只?

答案:1800
设今年养鸡x只
2000乘以20%=(2/9)乘以x
x=1800