A group of friends makes a video and posts it on YouTube - Junior Cycle Mathematics - Question 9 - 2018

With 80,000 views, the payment can be calculated using the same rate:

1. Determine how many units of 10,000 views are in 80,000 views:

   rac{80,000}{10,000} = 8 ext{ units}

2. Calculate the payment:

   $$8 imes €15 = €120$$

Therefore, they will be paid €120 for 80,000 views.

To find the average payment per view, we take the total payment for 10,000 views and divide it by 10,000:

1. Calculate average payment: rac{€15}{10,000} = €0.0015 ext{ per view}

Thus, they will be paid on average €0.0015 for 1 view.

The profit can be calculated using the revenue generated from views minus the cost of making the video. The formula is:

1. Profit: $$ext{Profit} = ext{Revenue} - ext{Cost} \\ = 0.0015x - 70 ext{ (where x is the total number of views)}$$

Given that each of the 7 friends receives €200, we can write:

1. Set up the equation: rac{0.0015x - 70}{7} = 200

To find x, we can solve the previous equation:

1. Multiply both sides by 7:

   $$0.0015x - 70 = 1400$$

2. Add 70 to both sides:

   $$0.0015x = 1470$$

3. Divide by 0.0015:

   x = rac{1470}{0.0015} = 980,000 ext{ views}

Thus, the total number of views of the video is 980,000.