math questions.....'?

👨🏻‍🏫 學術台數學

[匿名]

2007-12-02 10:40 am

in a music concert 9/13 of the audience were younsters.If there were 60 elderly people, find the total number of people in the audience...

回答 (3)

jaja_s8i

2007-12-02 10:48 am

✔ 最佳答案

4/13=60
(4/13=60)/4
1/13=15

9/13=135

135+60=195

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[匿名]

2007-12-02 6:49 pm

since there are 9/13 youngsters.. there are 4/13 elders..
so..
4:13 = 60:x
(13)(60)= 4x
x= 195

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[匿名]

2007-12-02 7:43 pm

9/13 X+60=X
4/13X=60
x=195

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