400÷(1+25%),
=400÷125%,
=320(头);
答:去年养猪320头.
某养猪场,今年养猪400头,比去年多养25%,去年养猪多少头?
某养猪场,今年养猪400头,比去年多养25%,去年养猪多少头?
数学人气:133 ℃时间:2019-09-09 11:35:57
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