问题
选择题
将一批苹果装箱,如果装50箱,还剩这批苹果的60%;如果装80箱,还剩900个.这批苹果一共有( )个.
A.1000
B.1250
C.2500
D.2800
答案
50÷(1-60%),
=50÷40%,
=125(箱);
900÷(125-80)×125,
=900÷45×125,
=20×125,
=2500(个).
答:这批苹果一共有2500个.
故选:C.
将一批苹果装箱,如果装50箱,还剩这批苹果的60%;如果装80箱,还剩900个.这批苹果一共有( )个.
A.1000
B.1250
C.2500
D.2800
50÷(1-60%),
=50÷40%,
=125(箱);
900÷(125-80)×125,
=900÷45×125,
=20×125,
=2500(个).
答:这批苹果一共有2500个.
故选:C.