Provide an example of a real-world industry or market that would be described by economists as perfectly competitive. (hint: what are the characteristics of perfectly competitive markets? )"

A perfectly competitive market is a market where all competitors are very small businesses, supply prices are perfectly elastic, all goods sold are the same(no branding), abnormal profits can only be made in the short run
Perfect competition is a theoretical model so there is no real world example in our world an example I find easy is the milk market since the good is the same no matter the brand and the amount of branding is minimal and there is usually a good amount of competitors in a country 

RM 687.3

Step-by-step explanation:

Number of members = 257

Each member makes = RM 25

So, total money = 257×25= RM 6425

1- 45 % of 6425 = 45 /100 × 6425=RM 2891.25

So, RM 2891.25  was spent for the year-end banquet. Hence remaining money after this expenditure = 6425-2891.25= RM 3533.75

2- 65 % of this remaining money = 65 /100 × 3533.75= RM 2296.45

So, RM 2296.5 were spent on souvenirs. Hence remaining amount = 3533.75 - 2296.45 =  RM 1237.3

3- Out of this remaining money RM 550 were spent for club jersey booking fees.

So, amount left = 1237.3 - 550 = RM 687.3