Răspuns:
Explicație pas cu pas:
30 g stafide ....................90 calorii
50 g stafide....................x
x = 50*90/30 =150 calorii
30 g stafide ....................24 g zahar
70 g stafide....................y
y = 70*24/30 = 56 g zahar
24 g zahar ................25%
a .................................100%
a = 100*24/25 = 96 g zahar
