The area of 3x5 face is used 4 times rather then twice
S=94in ^2
15=3b
15/3 = 3b/b
5= b
Isolate the variable by diving 3 on both sides
Easy you just divide it like a regular then put move the decimal to the left the number of times letters are behind it.
Answer: 7 hr
Step-by-step explanation:
Given
Distance between Emily and Kylie is 
Speed of Emily 
Speed of Kylie 
Distance traveled by Emily 
Distance traveled by Kylie 

They will meet after 7 hour.