Question

by selling a t v for rupees 8000 a shopkeeper loses 20percent of his cost if he sells it for rupees 11000 what profit or loss would be there for him

Answer 1

Hey mate,
at last use the formulae given above .
First we should find the cost price.
$cp = \frac{sp \times 100}{(100 - loss\%)}$
$cp = \frac{8000 \times 1000}{100 - 20}$
hope it helped.✔️✅