a) 24/100 x 150 = 24x3/2=72/2= 36l
b)80/100x 450=80x9/2 =720 /2= 360km
c)19/100x1800=19x18/1=342lei
d)20/100x350=20x7/2= 140/2=70kg
e)25/100x300=25x6/2=150/2= 75 g
f)90/100x1250 = 90x25/2 = 2250/2 = 1125 lei
.... ("/" reprezinta linia de fractie, iar "x" reprezinta inmultirea)