Question

Problema de matematica:
O data la fiecare 5 minute, primesc 10 bani. Cate minute trebuie sa stau ca sa strang 300 de bani?

Answer 1

10:5=2 minute, 1 ban
300:2=150 minute, 300 bani
sau:

5 minute.. ............10 bani
x minute................300 bani
x=5×300:10
x=1500:10
x=150