Answer:
3:2 or 3-2 or 3 to 2
Explanation:
Find the Greatest Common Factor of the number of boys and number of girls. Since there are 10 out of 25 girl students, there must be 15 boys. The GCF is 5, so divide both numbers by 5. 10/5=2 and 15/5=3
SInce it's male to female, put the results for boys before girls. you get your answer!!
If you need more help, ask me in the comments :)