question 1:
The total revenue received from thesale of x units of a product is given by
TRx=-3x^5 + 3/2x^4+ x/4+12square x+ 6y
Find the
- Average revenue AR.
- Marginal revenue MR.
- MR at x = 4.
- The actual revenue from selling10th item.
- Write down different rule of derivative.
question 2 :
- Calculate the principle amount borrowed from the bank for 20months at a rate of 7 3/4 % per annum with interest of 2250 RO.Also find the total amount to be paid back to the bank .
- Find the rate of interest required for an investment of 2000 ROto earn 320 RO interest over a period of 18 months.
- A family spends 30 % of their income on mortgage installmentsof 500 RO per month. Calculate the monthly income of thefamily.
- Find the sale price of a car if its cost price is 5500 RO and %loss is 15%.
- The price of a PC decreases from 60 RO to 55 RO. Express thisdecrease as a % decrease.
