Răspuns:
40l.................15kg
100l................xkg
x=100*15:40
x= 1500:40
x 37,5kg
40l..............15kg
60l...............xkg
x=60*15:40
x=900:40
x=22,5kg
40l........................15kg
xl..........................112,5kg
x=40*112,5:15
x=4500:15
x=300l
40l...........................15kg
xl..............................22,5kg
x=40/22,5:15
x=900:15
x=60l
Explicație pas cu pas: