Answer:

the answer is B. 30

hope it helps

Answer:

30

Step-by-step explanation:

The ratio of 3:5 can be thought of the fractions 3/8 and 5/8. If there are 18 boys in the class, it means that 3/8 of the total number are 18 boys. Since the total number is 48, then multiply the ratio of girls which is 5/8 to 48. This gives you 30.