Maths problem... Ratio?

2016-04-26 6:40 pm
5 schools sent some students to a conference

one of the schools sent both boys and girls
this school sent 16 boys
the ratio of boys to girls that it sent was 1 : 2

the other 4 schools sent only girls
each of the 5 schools sent the same number of students

work out the total number of students sent to the conference by these 5 schools

(How the Feck do you do this, I need it to be explained dumbed down)

回答 (1)

2016-04-27 8:55 am
First school => B : G = 16 : 32

i.e. 16 boys and 32 girls => total 48

The other 4 schools send the same amount, i.e. 48 girls each

Hence, 5 x 48 => 240 students

With 16 boys and 224 girls

:)>


收錄日期: 2021-04-21 18:19:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160426104037AAhqJ5w

檢視 Wayback Machine 備份