1) A grocer sold 5 kg of wheat flour at Rs 30 per kg and gained 20%. If he had sold it at Rs 27 per kg, what would be his gain or loss percent?

given,

selling price (sp)=rs 5 ×30

=rs 150

now, gain %=20%

cost price (cp)=

therefore cp= rs125

now,

again in 2nd case

sp= rs 27×5

therefore sp=rs 135

and cp= rs125

now, sp>cp so,

or, gain=

therefore gain %= 8%.... is answer

hope it helps..

20

step-by-step explanation: