Respuesta :
Grp 1: Grp 2
4 : 7
Total no. of untis= 11
11units=33
1unit= 3
Grp 1= 3 x 4
= 12
Grp 2= 7 x 3
= 21
4 : 7
Total no. of untis= 11
11units=33
1unit= 3
Grp 1= 3 x 4
= 12
Grp 2= 7 x 3
= 21
ratio is 4 to 7
so for every 4 photos in the first group there is 7 photos in the 2nd group
4+7 = 11
33/11 = 3
3*4 = 12 first group
3*7 = 21 second group