If we represent Tobin's speed as x, we can write her opponent's speed as
x-2 (since Tobin is 2 more than them). In addition, since it's in miles per hour, and 45 minutes is 3/4 of an hour, we can say that 3/4ths of her speed in miles per hour is how long the race is, so (3/4)(x-2)=distance of race. In addition, since it only took Tobin 30 minutes, and 30 minutes is half an hour, x/2 (half of her miles per hour) is the length of the race, so (3/4)(x-2)=(1/2)x. Expanding it, we get 3x/4-6/4=x/2. Subtracting x/2 (or 2x/4) from both sides, we get x/4-6/4=0 and by adding 6/4 to both sides we get x/4=6/4. Multiplying 4 to both sides, we get that x=6=Tobin's speed in miles per hour
Each sibling got 1 poster, 8 CDS and 72 books.
<h3>How the belongings were divided </h3>
Since the belongings were divided equally, each sibling would get the same amount of belongings. In order to determine the belongings each person got, we would divide each possession by 3.
- Number of poster each person got = 3/3 = 1
- Number of books each person got = 216
- Number of CDs each person got = 24 / 3 = 8
To learn more about division, please check: brainly.com/question/194007
1.3x-2.39=5.76x+4.74
+2.39 +2.39
_________________
1.3x=5.76x+7.13
-5.76x -5.76x
______________
-4.46x=7.13
/-4.46 /-4.46
__________
x=-1.6
D
128 im pretty sure you would take 16 times 4 which equals 64 then you would multiply 64 times 2 and get 128
