given utility function u=x0.75 y0.25 where px = 2 birr, birr, py = 4 birr and the income of the consumer is, m= 240 birr. a. find the utility maximizing combinations of x and y. b. calculate marginal rate of substitution of x for y at equilibrium and interpret your result.

given utility function u=x0.75 y0.25 where px = 2 birr, birr, py = 4 birr and the income of the consumer is, m= 240 birr. a. find the utility maximizing combinations of x and y. b. calculate marginal rate of substitution of x for y at equilibrium and interpret your result.