1)Find ratio
Adult versus child
5 to 3
Child is 3/8 to the whole people

Boy versus girl
3 to 1
Boy is 3/4 in the child
The entire population is
3/8 x 1/4 who is boy

2) curry puff is called cp

Adult has 3 each, child 2 each

Ratio of co is 3x 5/8 versus 2 x 3/8

You will get 15 versus 6 (since both sides has 1/8 can drop), adult has cp of 1092 x 15/21, and since adults has 3 each then 1092 x 15/21 divided by 3 will be the number of adults