Suppose a consumer can afford to buy 6 units of good 1 and 8 units of good 2 if she spends her entire income. The prices of two goods are Rs 6 and Rs 8 respectively. How much is the consumer’s income?
P1 = Rs 6
P2 = Rs 8
x1 = 6
x2 = 8
Budget line = M = P1x1 + P2x2
M = 6 × 6 + 8 × 8
M = 36 + 64
M = 100
Thus, the consumer’s income is Rs 100.