题目内容
原来用6个同样大小的纸箱装每袋重10千克的洗衣粉,共装若干袋.如果每袋的重量增加6千克,要使每箱的重量和原来相同,每箱的袋数应减少( )
| A.60% | B.40% | C.37.5% | D.50% |
现在每袋的重量是:10+6=16(千克),
(
-
)÷
,
=(
-
)÷
,
=
÷
,
=
×10,
=0.375,
=37.5%;
答:每箱的袋数应减少37.5%.
故选:C.
(
| 1 |
| 10 |
| 1 |
| 16 |
| 1 |
| 10 |
=(
| 8 |
| 80 |
| 5 |
| 80 |
| 1 |
| 10 |
=
| 3 |
| 80 |
| 1 |
| 10 |
=
| 3 |
| 80 |
=0.375,
=37.5%;
答:每箱的袋数应减少37.5%.
故选:C.
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