Question
When to accomplish a particular necessity, the Demand of
various goods is increased automatically into the market , it is known as ________________ .Solution
Example of Derived demand, For building a house, the demand of Painter, labour, artisans, Bricks, Cements automatically increases. Cross Demand is the ratio of percentage change in quantity demanded of a product to percentage change in price of a related product. Composite demand happens when goods or services have more than one use so that an increase in the demand for one product leads to a fall in supply of the other. E.g. milk which can be used for cheese, yoghurts, cream, butter and other products . Joint demand occurs when demand for two goods is interdependent. For example, it is no good having a printer without the ink to go with it.
Given that (3a + 7b = 54) and (ab = 24), determine the value of (9a2 + 49b2).
The certain sum amounts to Rs11313.5 in 2(1/2) years at 12% p.a., interest compounded 10 months. The sum (in Rs) is:
Find the number of zeroes in 18 × 125 × 20 × 32.
If (2a + b)/(3b - 2b) = 13/2 then 'b' is what percent of 'a'?

   = ?If (a + b) = 17 and (a2 + b2) = 145, then find the value of (a × b).
If x² + y² + z² = xy + yz + zy (x≠0), then the value of (5x+3y-4z)/2x is
when x =4 and y =-6 then find the value of 27x³ +58x²y +31xy² +8y³?
What will come in the place of question mark (?) in the given expression?
?2 = (392 × 224) ÷ (112 × 28) + 62