You can set up a ratio problem
take what you know and set it equal to what you don't know
4/6 = r/15
Cross multiply and get:
60 = 6r
divide by 6
r = 10
Answer:
60
Step-by-step explanation:
since we are taking 5 trys to each room and there are 12 you would multiply 5 by 12 making it 16
Answer:
Answer number c (0.3 liters per hour is the average rate)
Step-by-step explanation:
Answer:
Simplifying
2x + -15 + x + -5 = 148
Reorder the terms:
-15 + -5 + 2x + x = 148
Combine like terms: -15 + -5 = -20
-20 + 2x + x = 148
Combine like terms: 2x + x = 3x
-20 + 3x = 148
Solving
-20 + 3x = 148
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '20' to each side of the equation.
-20 + 20 + 3x = 148 + 20
Combine like terms: -20 + 20 = 0
0 + 3x = 148 + 20
3x = 148 + 20
Combine like terms: 148 + 20 = 168
3x = 168
Divide each side by '3'.
x = 56
Simplifying
x = 56
