3.3 Flashcards
(60 cards)
State the formula of Total Revenue
TR = P x Q
What is a price maker?
It is a firm that has sufficient market power to set its own price rather than taking market price. This happens because the firm faces a downwards sloping demand curve. As a result it can increase price but this reduces quantity demanded. It can decrease price to sell more but this reduces revenue per unit. The firm is operating in an imperfectly competitive market.
What does the TR graph for a price maker look like. (revenue against quantity)
The TR curve is a parabola shape
Price is still high so initially TR increases as TR = P x Q so when quantity increases, TR increases. TR then reaches Maximum revenue as the PED = 1. TR the declines as the fall in price outweighs the increase in quantity.
What is a price taker?
A price taker is a firm that has no control over the market price and must accept the price set by supply and demand. The firms face a horizontal demand curve meaning the firms can change the quantity sold but not the price or else they will loose all their customers. Price takers are typically found in perfect competition, where there are many small firms, identical products, and no barriers to entry.
What is the Formula for Average Revenue
AR = TR/Q
AR = P x Q/Q
What is Average Revenue?
Average revenue is the amount a firm receives per unit sold. It is another word for price. A firms average revenue curve is also its demand curve.
Describe the Average revenue graph for a price Taker.
AR is horizontal.
An example is a fishing boat captain who who brings his catch into the ports in the mornings. The price he gets for the fish depends entirely on the supply and demand for that fish at that particular port, and the fisherman has to accept the price offered.
Describe the Average revenue graph for a price Maker.
AR is downwards sloping.
What is Marginal Revenue?
It is the amount a firm receives for selling one extra unit of output.
What is the formula for MR?
MR = Change in TR / Change in quantity sold.
Describe the MR graph for a Price Taker
MR is horizontal and equal to AR
Describe the MR graph for a price Maker
The MR curve is downwards sloping. It has a gradient twice as steep as the AR curve
Why is the MR curve downwards sloping for a price Maker?
It is because the firm faces a downwards sloping demand curve. This means that to sell more the firm most lower their price. The firm gains revenue from selling more units however it looses revenue due to the lower price. Thus MR decreases.
Why is the MR curve horizontal for a price taker
because every additional unit brings in the same revenue as the last one.
Define PED
It is a measure of the responsiveness of quantity demanded due to a change in price.
What is the formula for PED ?
Percentage change in quantity demanded / percentage change in price
Explain the relationship between PED and the average revenue curve
At high prices demand is elastic (PED > 1) lowering price increases TR, as the percentage increase in quantity demanded is greater than the percentage decrease in price.
At midpoint of the AR curve, demand is unit elastic (PED = 1) → TR is maximized, as price changes do not affect total revenue.
At low prices (high quantity), demand is inelastic (PED < 1) → lowering price decreases TR, as the percentage increase in quantity is smaller than the percentage drop in price.
What is the formula for Total Cost?
TC = TFC + TVC
What are TVC?
Costs that change when output changes.
For example raw materials.
What are TFC ?
Costs that do not change when output changes.
For example rent
What is the formula for Total Fixed Cost?
TFC = TC - TVC
What is the formula for Total Variable cost?
TVC = TC - TFC
What is the formula for Average cost?
AC = TC/Q
What is the formula for Average Fixed cost?
AFC = TFC/Q