(toate problemele trebuiesc rezolvate cu regula de 3 simpla)
1.
12stilouri.................420 lei
x stilouri..................595 lei
12/x=420/595
x=12*595/420=17
2.
36m....................15 costume
x m......................24 costume
36/x=15/24
x=36*24/15
x=57,6