Question

A shopkeeper charges Rs. 50 per item for purchasing 20 or less items. He gives a rebate of Rs. 2 if items purchased is more than 20 and less than 50, and Rs.2, if more than 50 items are purchased. Find the cost function and determine the points at which the function is not continuous

Answer 1

If marked price = ₹1700, selling price = ₹1540 then find the discount.

ANSWER:

Marked price = ₹ 1,700

Selling price = ₹ 1,540

∴ Discount = Marked price − Selling price = ₹ 1,700 − ₹ 1,540 = ₹ 160

Answer 2

Answer:

c(x)= {50x x ≤ 20}

{48x 20< x ≤ 50}

{ 46x. x > 50}