a consumer only purchases 2 commodities, rice and beans. In 1980, the prices per dish of rice and beans were 5naira and 8naira respectively. but in 1987 the prices of the same quantities of both commodities became 8naira and 12naira respectively. If the consumer spends twice as much on rice as on beans. calculate the weighted retail price index using 1980 as base year​

Suppose that a paving company produces paved parking spaces (q) using a fixed quantity of land (t) and variable quantities of cement (c) and labor (l). the firm is currently paving 1,000 parking spaces. the firm's cost of cement is $3 comma 600.003,600.00 per acre covered (c) and its cost of labor is $35.0035.00/hour (w). for the quantities of c and l that the firm has chosen, mp subscript upper c baseline equals 60mpc=60 and mp subscript upper l baseline equals 7mpl=7. is this firm minimizing its cost of producing parking spaces?