Răspunsuri

2014-06-24T21:07:40+03:00
Fie p=procentul
p/100 * 60=15
60p=1500
p=25%
2014-06-24T21:13:02+03:00
Faci c regula de 3 simpla
60 min.........100%
15min...........x %
__________________
x=15x100/60
x=25