Răspuns :
Pai un kg are 1000 de g asa ca 2 kg de coacaza neagra contine 2000·250 adica 500 000 de mg de vitamina C. Transformat in grame e 500 de g de vitamina C!
100g................250mg (0,25g)
2kg(2000g)..........x
x=2000 . 0,25/100=5g
Prin urmare 5 grame de vitamina C se gasesc in 2 kg coacaze negre.
2kg(2000g)..........x
x=2000 . 0,25/100=5g
Prin urmare 5 grame de vitamina C se gasesc in 2 kg coacaze negre.