(a) Distinguish between wants and demand (b) With the aid of diagrams show the effect on demand when (i) there is a reduction in the number of 2200 consumer...

(a) Distinguish between wants and demand 
(b) With the aid of diagrams show the effect on demand when (i) there is a reduction in the number of 2200 consumers (ii) prices of substitutes increase
(iii) there is a decrease in 0-16 years the price of the commodity