<u>Answer:</u>

<u>Solution:</u>
Given: x=30
To solve: 
On substituting the value of x,

On dividing 30 and 5 we get,

So, the option is 15.
A) AED 4000
4000 x .10= AED 400 therefore 400 is 10% of 4000
The first one is B because of the first attachment. The second one is A because of the second attachment. The third one is C because of the expression used to solve for sum of angles:
(n-2)180
(8-2)180
1080
Hope this helps!
Answer:
A positive number.
Any negative subtracted from a positive will always be positive.