中1至2MATHS
2012-07-18 6:37 am
Ann had a bag of glass beads.She used half of the beads to make a necklace.She and her sister then use 6分之1 and 7分之1 of the original number of beads respectively to make two bracelets.If there are 16 glass beads left.find the original number of glass beads.
回答 (2)
2012-07-18 7:26 am
✔ 最佳答案
Let the original number of glass beads is Y, thenY * (1-1/2-1/6-1/7)=16
8/42 *Y=16
Y=16 * 42/8
Y=84
So the original number of glass beads is 84.
2012-07-18 6:53 am
試問樓主是否從 New Century Mathematics Summer Exercise S1-S2 copy 的?
收錄日期: 2021-04-13 18:49:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120717000051KK00772