Question

If 30% is lost by selling a sofa for Rs980, at what price must it be sold to gain 10%

Answer 1

let x be the actual price of the sofa.
$let \: x = 100$
after 30% loss
$y = 100 - 30\%ofx = 70$
actual y = 980
so actual x will be
$x = (100 \div 70) \times 980 = 1400$
after 10% profit
new y will be
$y = (110 \div 100) \times 1400 = 1540$
answer 1540 RS.