Question

Intr-un minut,printr-un robinet curg 8 litri de apa.Afla cata apa va curge prin robinet in a)o ora b)doua ore si 15 min d)3ore si 30 min e) 300de secunde

Answer 1

a) 1 ora = 60 min
    1 min............ 8 l apa
    60 min...........  x
    x = 60 * 8 
    x = 480 l
b) 2 h 15 min = 2 * 60 + 15 = 135 min
    x = 135 * 8 = 1080 l
d) 3 h 30 min = 3 * 60 + 30 = 180 + 30 = 210 min
    x = 210 * 8
    x = 1680 l
e) 300 sec : 60 = 5 min
    x = 5 * 8
    x = 40 l