Many of 'mirror's' fans, fans of a Hong Kong Cantopop boy music group, complaint that they cannot buy a concert ticket. To meet some fans' demand, the group decides to increase the number of music shows and keep the same ticket price. Draw a supply-demand diagram to illustrate the effect of increase the number of music shows. (L4)

There is a shortage in the market, therefore, some fans cannot buy a concert ticket.

Increasing the number of music shows will increase the supply of concert ticket.

Without changing the ticket price, increase in supply will increase the quantity transacted. The problem of shortage can be improved.

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