2.9411764706
but if they're telling you to round, then round (:
We will check if y and 60cm are parallel.
If the lengths 28cm, 56cm and 15cm, 30cm are in proportion, then y and the segment 60cm are parallel.

OK. We know: y and 60cm are parallel. Therefore we have equation:

<h3>Answer: y = 90 cm.</h3>
The angles in the new triangle is the same as the original triangle.
The angles are the same, they are not multiplied by the factor of 1.5
- 1/3 - 1 2/3 = - 2
When subtracting two negatives you add the two numbers together.