Two positive numbers are in the ration 4 : 7 and the difference of the two numbers is 12. Find the two numbers. Thx?
回答 (2)
2016-08-08 8:18 am
Sol
a：b=4：7
a/4=b/7=p
a=4p，b=7p
b>a
b－a=12
7p－4p=12
p=4
a=12，b=28
a：b=4：7
a/4=b/7=p
a=4p，b=7p
b>a
b－a=12
7p－4p=12
p=4
a=12，b=28
2016-11-08 2:10 am
16,28
收錄日期: 2021-04-18 15:24:19
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https://hk.answers.yahoo.com/question/index?qid=20160808000703AAyIxii