Hello great tutors please help me solve question 3

3. Consider an exchange economy with two goods and three persons. Alf always demands equal quantities of the two goods. Bill's expenditure on good 1 is always twice his expenditure on good 2. Charlie done not value good 2 at all. a) Describe the indifference maps of the three individuals and suggest utility functions consistent with their behavior. b] If the original endowments are respectively (5,0), [3,6], and [0,4], nd the equilibrium price ratio. What would be the effect on equilibrium prices and utility levels if: i) 4 extra units of good 1 were given to Alf; ii) 4 extra units of good 1 were given to Charlie