the ratio of boys to girls in a class is 3:5 if there are 12 boys how many girls are there

the ratio of boys to girls in a class is 3:5 if there are 12 boys how many girls are there

Answers
5 x 4 = 20 girls
chloe
24 May 2011
so now all we have to do is multiply the 5 by 4 to find out how many girls there are:
chloe
24 May 2011
12/3 = 4
chloe
24 May 2011
well first we have to divide 12 by 3 in order to get the 'scale factor' if you like
chloe
24 May 2011
thanks
kieran1999
24 May 2011
The ratio of boys to girls in a class is 3:5. There are 40 students in the class. How many students are girls?
jane
28 December 2020
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