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