320➗8= 40
40✖️3= 120
120/320
120 students have pets
Hope this helps! :3
Answer: 17 and 25
Step-by-step explanation:
Let X and Y be the two numbers.
---------------
X + Y = 42 [sum of two numbers is 42]
X - Y = 8 [their difference is 8]
-------------------
Rearrange the last equation to
X = 8 + Y
Now enter that into the 1st equation:
X + Y = 42
(8+Y) + Y = 42
2Y = 34
<u>Y = 17</u>
Since X - Y = 8,
X = 8 + 17
<u>X = 25</u>
===
X + Y = ?
17 + 25 = 42 <em>Checks</em>
X - Y = ?
25 - 17 = 8 <em>Checks</em>
Here you have the solution. If you are interested in the law which I have used here, you can read about countinuity of fluid principle.
Answer:
It will take 3hrs for the second ship to catch up with the first ship.
Step-by-step explanation:
Rx + h = sx - k
subtract h from both sides
rx = sx - k - h
subtract sx from both sides
rx - sx = -k -h
divide both sides by r-s
x = (-k -h) / r-s
Hope this helps :)
