4) Suppose we have two consumers, Barry and Hank. Barry only consumes coffee (x

1

) with

one teaspoon of sugar (x

2

). Hank also consumes coffee with only a certain amount of sugar,

but you don't know what that amount is. That is, coffee and sugar are perfect complements

for both consumers. Both Barry and Hank have $45.50 in income, the price of coffee is $3, and

the price of sugar is $0.50 per teaspoon. Hank ultimately consumes one more cup of coffee

with sugar than Barry.

With how many teaspoons of sugar does Hank always drink coffee with? (10 points)