Răspuns:
150 elevi ___ 100%
x elevi ______ 20%
x = 3000/100 = 30 elevi au ales spaghetti
150 elevi ____ 100%
y elevi _______ 32%
y = 4800/100 = 48 elevi au ales pizza
150 elevi _______ 100%
z elevi ______ 22%
z = 3300/100 = 33 elevi au ales aluat fierbinte
150 elevi ______ 100%
t elevi _________ 14%
t = 2100/100 = 21 elevi au ales iubire
150 elevi ______ 100%
u elevi ________ 8%
u = 1200/100 = 12 elevi au ales un soi de chiftele cu curry
4% înseamnă 6 elevi au ales mâncare Wok
30+48+33+21+12+6=150 elevi