# 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

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
120
malar
24 June 2021
I don't get it
Irene Kakai
25 June 2021
Irene kakai
kakaiirene36@gmail.com
25 June 2021
25
Jim
18 October 2021
Sum of part=3+5=8. Equal share =40÷8=5. boy 's share =40×3=120.girl 's share=40×5=200.
Ndizihiwe napoleon
04 December 2021
30
Czachie234
06 February 2022
oh wait its not 30 i think its 29
Czachie234
06 February 2022
If the ratio of boys to girls is 1ratio 2 how many boys are there if there are 12 girls
Muritala Ayinde
06 February 2022
25
Yvonne
20 March 2022