1.5 units of good x can the consumer purchase if her income is $15 and she spends it entirely on purchasing good x.
A budget constraint in economics refers to all the combos of goods and services that a consumer can buy given current prices and his or her given income.
Consumer theory examines the parameters of consumer choices using the theories of a budget constraint and a preferential map.
In the two-good case, both theories have a ready graphical representation.
Consumers can only buy as much as their income allows, so they are limited by their budget.
The equation of budget constraint is:
*x +
*y = m
where is the price of good X,
is the price of good Y,
x is units of good X,
y is units of goods Y,
and m is income.
m = 15
Px = 10
Py = 5
15 = 10x + 5y
Since she spends it entirely on purchasing good x
15 = 10x + 0
15 = 10x
x = 15/10
= 1.5
Hence, The consumer can purchase an amount of Good X = 1.5.
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