Answer:
x is 4 when y is 180
y is 540 when x is 12
Step-by-step explanation:
In the metric system, you give a name to the following multiples: 10, 100, 1000, 0.1, 0.01, 0.001, and then you skip three places. So, you have

And thus 0.000001 of something is a micro-something (i.e. one millionth of a certain unit)
70% = 0.7
0.7 of 200 = 0.7*200
= 140
So, 70% of 200 is 140