Answer:
let the price of fruits be X per kg
cp of 50kg of friuts =50x
he sells 30kg of fruits on its cp of 35 kg
cp of 30kg fruits=30x
sp of 30kg fruits=35x
remaing fruits is 20kg
he sells 20kg of fruits on cp of 16kg
cp of 20kg fruits=20x
sp of 20kg fruits =16x
total cp is =50x
total sp is =(35+16) =51x
sp>cp(it means profit)
profit =sp-cp
=51-50
= 1
profit%=gain/cp × 100
= 1/50×100
=2%