Question

A cellphone was marked at 40% above the cost price and a discount of 30% was given on its marked price.find the gain or loss per cent made by the shop keeper.

Answer 1

Let Cost Price of the Cell Phone = Rs. 100

Marked Price = CP + 40% of CP

                      = 100 + 40

                      = Rs. 140

Discount = 30% of  Marked Price

∴ Discount = Rs. 42

SP = Marked Price - Discount

    = 140 - 42

    = 98

∵ Cost Price > Selling Price, it is a loss

Loss = CP - SP

        = 100 - 98

        = 2

∴ Loss = 2%  [ (Loss/CP) × 100 ]

Answer 2

Hey!!!
This is very simple

Let the cost price = x
Marked price = x + 40x /100
=>marked price = 1.4x
After discount of 30 percent on marked price = 1.4x - 30(1.4x)/100
= 1.4x - 42x/100
= 1.4x - 0.42x
= 0.98x
= 9.8 percent


So, the shop keeper sold the cellphone for a loss of 9.8 percent


:-) hope it helps you...........


Please mark this answer as brainleist..........