Question

A grocery shop owner buys wheat in a large quantity. He sells half the wheat at 20% profit, hald of the remaining at 20% loss and rest at cost price. Find his gain/ loss percentage in the whole transaction.
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Answer 1

Answer:

Step-by-step explanation:

let the cp=x                                                

case 1:

cp=x

profit=20%

sp=100+p*cp/100

sp=120*x/100

sp=120x/100

sp=6x/5    

case2:

cp=x

loss=20%

sp=100-20*cp/100

sp=80x/100

sp=4x/5

net sp=4x/5+6x/5=10x/5=2x

net cp=x+x=2x

so as he is having sp=cp there is no profit nor loss