Question

daca 5 kg de mere costa 11,5 lei atunci 12 kg de mere costa

Answer 1

Răspuns:

5kg..................11,5

12kg.................x

5/12=11,5/x

5x=11,5×12

5x=138

x=27,6

12kg de mere costa 27,6 lei

Answer 2

Răspuns:

11.5:5=2.3 lei costa 1 kg mere

2.3 x 12=27.6 lei costa 12 kg mere