饲养场养鸡,鸭,鹅,兔共4000只.鸡占40%,鸭占30%,鹅占25%,兔占5%.

问题描述:

饲养场养鸡,鸭,鹅,兔共4000只.鸡占40%,鸭占30%,鹅占25%,兔占5%.
养的鸡比鹅多百分之几?多多少只?养的兔比鸡少百分之几?少多少只?

养的鸡比鹅多:40/100-25/100=15/100,即多15%
鸡比鹅多多少只:4000×15/100=600(只)
养的兔比鸡少:40/100-5/100=35/100,即少35%
兔比鸡少多少只:4000×35/100=1400(只)