I would suggest asking your teacher for help that seems like a lot... :(
40 students makes for the DJ.
20 students makes for the decorations.
300 students makes for the profit.
so there was 360 students that went to the dance.
Complete Question:
The deck that Amos is building is in the shape of a parallelogram, DGRY. The measure of D is five-halves the measure of Y. Find the measure of each angle of the deck.
Answer:


Step-by-step explanation:
Given
Shape: Parallelogram DGRY
Dimension: 
Required
Find the measure of each angle
D and R are opposite sides & G and Y are also opposite sides.
So, we have:

and

The sum of angles is given as:

Substitute values for 

Take LCM


Multiply both sides by 





So:






Hence:

Answer:
1.30%
2. 30 questions
3. 60%
Step-by-step explanation: