Question

16．甲、乙兩數(shù)的比是8：5，甲數(shù)比乙數(shù)少60%，乙數(shù)比甲數(shù)多37.5%．

Answer 1

分析 甲乙兩數(shù)的比是8：5，那么把甲數(shù)看成8份，乙數(shù)看成5份，
求甲數(shù)比乙數(shù)少百分之幾就用這兩個數(shù)的差除以乙數(shù)即可．
求乙數(shù)比甲數(shù)多百分之幾就用這兩個數(shù)的差除以甲數(shù)即可．

解答 解：甲乙兩數(shù)的比是8：5，那么把甲數(shù)看成8份，乙數(shù)看成5份，
（8-5）÷5
=3÷5
=60%

（8-5）÷8
=3÷8
=37.5%
答：甲數(shù)比乙數(shù)少60%，乙數(shù)比甲數(shù)多37.5%．
故答案為：60，37.5．

點評 本題是求一個數(shù)比另一個數(shù)少百分之幾，關鍵是看把誰當成了單位“1”，單位“1”的量為除數(shù)．