Question

EX- A shopkeeper makes a cheating of 20% at the time of buying the goods and 40% cheating at the time of selling the goods .he promise to sell his goods at 10% loss. Find his profit or loss %?

Answer 1

Step-by-step explanation:

gain in buying 1 kg =1.2

gain in selling 1 kg=.6

net sp = .6*1.1=.66

net gain = 1.2-.66= 0.54

%gain= 0.54/1.2*100= 45%

Answer 2

Answer:

80%

Step-by-step explanation:

Firstly let the amount be 1000g for 1000 rupees

so he gets 1200g for 1000 rupees...…(1)

now he sells 600g for (as he cheats 40%) 900 rupees( as he promises for a loss 10%).

Had he got it for fair price price for 600g would be 600 rupees

but now the CP for 600g of his goods is ….from (1)

1200g for 1000 rupees

600g for 500 rupees

so his final CP is 500 rupees

and his SP is 900 rupees

Therefore his profit percentage is

(SP-CP)/CP*100

(900-500)/500*100=80%