1. In a school, there are 1152 students. Half of the students live on Hong Kong Island and 432 students live in Kowloon.The rest of the students live in the New Territories. Among the students who live in the New Territories, 5/6 of them live in Taipo and the rest of them live in Tsuen Wan.
a) What fraction of the students live in Tsuen Wan?
b) If 1/2 of the students who live in Tsuen Wan now move to Hong Kong Island, then what fraction of the students are living on Hong Kong Island?
Maths questions (2)
2007-09-23 12:26 am
回答 (2)
2007-09-23 12:45 am
Total number of student is 1152
Total number of student live in Hong Kong is 1152 /2 = 576
Total number of student live in Kowloon is 432
Total number of student live in NT is 1152 - 576 - 432 = 144
Total number of student live in Tsuen Wan is 144 * 1/6 = 24
fraction of the students are living in Tsuen Wan is 24/1152 = 1/48
(b)
fraction of the students are living on Hong Kong = (576 + 12) / 1152
= 49 / 96
Total number of student live in Hong Kong is 1152 /2 = 576
Total number of student live in Kowloon is 432
Total number of student live in NT is 1152 - 576 - 432 = 144
Total number of student live in Tsuen Wan is 144 * 1/6 = 24
fraction of the students are living in Tsuen Wan is 24/1152 = 1/48
(b)
fraction of the students are living on Hong Kong = (576 + 12) / 1152
= 49 / 96
參考: me ^^
2007-09-23 12:43 am
1a. 〔1152 ﹣(1152÷2﹢432)〕 ÷5/6
=〔1152-(576﹢432)〕 ÷5/6
=〔1152-1008〕 ÷5/6
= 144÷5/6
= 172.8
∴About 173/1152 students were living in Tsuen Wan.
1b. 172.8÷ 2﹢(1152÷2)
=86.4﹢576
=662.4
∴About 663/1152 students were living in Hong Kong Island.
=〔1152-(576﹢432)〕 ÷5/6
=〔1152-1008〕 ÷5/6
= 144÷5/6
= 172.8
∴About 173/1152 students were living in Tsuen Wan.
1b. 172.8÷ 2﹢(1152÷2)
=86.4﹢576
=662.4
∴About 663/1152 students were living in Hong Kong Island.
參考: me ﹥3333﹤
收錄日期: 2021-04-13 18:58:44
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