Answer:
-3/5
Step-by-step exp:
given in the file. Hope it helps.
To start off with you need to get math-way it will help out
Similar steps:
1. You need to draw a reference line first( It's trivial but hey, it's similar)
2. You need to draw the other line with pre-defined slope( parallel with same slope, perpendicular with the product of the slope to be -1)
Answer: 30%
Step-by-step explanation:
12/40 × 100
= 30%