Respuesta :

4:11=15
1320 divided by 15=88
4 x 88= 352

Answer 352
352 big fish 
you do 1320 divided by 15 as 4+ 11  is 15
which =88
so 4 times 88=352
11 times 88 =968
and 968+352 =1320
so answer is 352