Answer:660
Step-by-step explanation:
there you go please rate full satr
I don’t know sorry mansisnsiwhe sha
Answer:

Step-by-step explanation:
Total red haired students = 15+5 = 20
Boys = 15
<u><em>Fraction:</em></u>
=> 
<u><em>In simplest form:</em></u>
=> 
Product: Multiplication. therefore, 7n