SOLUTION: | - | - - | - - | 5 x y 3x In the number line above, if the marks are equally spaced, what is the value of the coordinate y? (A) 10 (B) 20 (C) 30 (D) 40 (E) 50

Algebra ->  Number-Line -> SOLUTION: | - | - - | - - | 5 x y 3x In the number line above, if the marks are equally spaced, what is the value of the coordinate y? (A) 10 (B) 20 (C) 30 (D) 40 (E) 50      Log On


   

Question 1201952: | - | - - | - - |
5 x y 3x
In the number line above, if the marks are equally spaced, what is the value of the coordinate y?
(A) 10
(B) 20
(C) 30
(D) 40
(E) 50
Found 3 solutions by ikleyn, josgarithmetic, greenestamps:
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.

What this post is about ?

If you think that you presented a Math problem here, then you make a mistake.



Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
| - | - - | - - |
5 x y 3x

Cannot be read correctly shown that way.

If the MARKS are equally spaced, then maybe should be more like this:
| - - | - - | - - |
5     x     y    3x

"Coordinate values"?



Could use this:
system%28x-5=y-x%2C3x-y=y-x%29
system%282x-5=y%2C4x=2y%29
system%28y=2x-5%2Cy=2x%29
2x-5=2x
-5=0
MEANINGLESS
MEANINGLESS

Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


To me, the problem is clear; and it IS a good math problem....
 | - | - - | - - |
 5   x     y    3x

The distance from x to y is the same as the distance from y to 3x:

y-x = 3x-y
2y = 4x
y = 2x
 | - | - - | - - |
 5   x    2x    3x

Note we could also obtain that result by saying that y is halfway between x and 3x....

The distance between x and y (which is 2x) is twice the distance between 5 and x:

2x-x = 2(x-5)
x = 2x-10
x = 10

ANSWER: y = 2x = 2(10) = 20 Answer (B)