Ann had a bag of glass beads. She used half of the beads to make a necklace.
She and her sister then use 1/6 and 1/7 of the beads respectively to make two
bracelets. If there are 16 glass beads left, find the original number of glass beads.
Thanks!
Maths Question
2007-07-21 2:19 am
回答 (2)
2007-07-21 2:39 am
✔ 最佳答案
If the original number of glass beads is Y,Y X (1 - 1/2 - 1/6 - 1/7) = 16 .............
Y = 84
So, the original number of glass beads is 84.
參考: Myself
2007-07-21 2:38 am
16 divide 1/6 divide 1/7 divide 1/2
= 16 x 6/1 x 7/1 x 2/1
= 96/1 x 7/1 x 2/1
= 671/1 x 2/1
= 1344
:. The original no. of glass beads is 1344.
---------------------------------------------------------------------------------------------------------------
Original:
1344 x 1/2
=672
672 x 1/6
=112
112 x 1/7
=16
:. The ans. is 16.
--------------------------------------------------------------------------------------------------------------------------
= 16 x 6/1 x 7/1 x 2/1
= 96/1 x 7/1 x 2/1
= 671/1 x 2/1
= 1344
:. The original no. of glass beads is 1344.
---------------------------------------------------------------------------------------------------------------
Original:
1344 x 1/2
=672
672 x 1/6
=112
112 x 1/7
=16
:. The ans. is 16.
--------------------------------------------------------------------------------------------------------------------------
參考: myself
收錄日期: 2021-04-23 22:56:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070720000051KK03535