Answer:

Step-by-step explanation:
Given


Required
After how many minutes, will they round together
First, convert the given time to minutes









So, we have:


List out the multiples of the time of both security personnel take round.


In the above lists, the common time is:

<em>This implies that they go on round after </em>
<em></em>
Part A:
x - total number of liters ( milk + water )
0.2 x + 1 = x
Part B :
0.2 x + 1 = x
0.8 x = 1
x = 1 : 0.8 = 1.25 lit.
Milk:
1.25 x 0.2 = 0.25 lit.
Start by combining like terms -2x + -3x = -5x. 7 + -9 = -2. You should get -5x - 9.
Answer:
10.3923
Step-by-step explanation:
= ( 12 x 9 )^1/2
= ( 108 )^0.5
= 10.3923
alr thanks for the free points