Answer:
4 / 15
Step-by-step explanation:
Of all students ; 5/9 have a pets
Of the 5/9 who have a pet; 12 /25 have a dog
Fraction of the student in the school who have a dog;
12 /25 of fraction with pet
= 12 /25 of 5 /9
= 12 /25 * 5 / 9
= (12 * 5) / (25 * 9)
= 60 / 225
= 4 / 15