Question

chinmoy sold his radio set at 10% loss. if he had sold it for rs. 45 more he would have made 5% profit. For how much did he sell the radio

Answer 1

$loss \: percent = 10\% \\ cp = sp \times 100 \div 100 - l\% \\ 45 \times 100 \div 100 - 10\% \\ = 50 \\ p\% = 5 \\ p = 50 \times 5 \div 100 \\ = 2.5 \\ 50 + 2.5 \\ = 52.5$