Question

a avendor purchased banana at rs 40 per dozen and sold them at 10 for rs 36 find his gain or loss per cent

Answer 1

Cp of 1 bought by vendor=40/12. =10/3. Sp of 1 bought by vendor=36/10. =18/5. Gain=Sp-cp. = 18/5-10/3. =4/15. Gain%=gain/cp*100. =(4/15)/(10/3)*100. =(4*3*100)/(15*10). =8. =8%answer