Question 19M.3.HL.TZ0.1j
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.3.HL.TZ0.1j |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Calculate | Question number | j | Adapted from | N/A |
A music concert is to take place in Country Z. 40 000 tickets are available for the concert. Figure 3 shows the demand (D) for tickets at this concert.
Figure 3
Calculate the maximum revenue that could be earned from selling tickets for the concert.
[2]
150 × 30 000
Any valid working is sufficient for [1].
= $4 500 000
An answer of $4 500 000, 4 500 000, $4.5 million or 4.5 million without any working is sufficient for [1].
OFR applies from part (i), depending on where the MR curve cuts the x axis.
The majority of candidates recognized that revenue is maximized where MR = 0 and therefore earned full marks here, either correctly or with application of the Own Figure Rule (OFR). A significant number, however, provided an answer of $4 million without any justification.
