ratio
2007-09-21 3:06 am
In a class, the ratio of the number of boys to the number of girls is 3:2 .If there are 14 girlsin the class,find the total number of student.
回答 (2)
2007-09-21 3:10 am
✔ 最佳答案
number of boys = (14)(3/2) = 21total number of student = 21 + 14 = 35
2007-09-22 2:02 am
Let n be the number of boys
Since there are 14 girls in the class
==> n:14 = 3:2
Be noted that we can use a fraction to display the ratio
n:14 can be written as n/14
Thus,
n/14 = 3/2
2n = 3*14
2n = 42
n = 21
Therefore there are 21 boys in the class
Since there are 14 girls in the class
==> n:14 = 3:2
Be noted that we can use a fraction to display the ratio
n:14 can be written as n/14
Thus,
n/14 = 3/2
2n = 3*14
2n = 42
n = 21
Therefore there are 21 boys in the class
參考: Me
收錄日期: 2021-04-13 19:03:50
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