Răspuns :
a) 60......100%
15........x%
x = 15x100/60 = 25%
b) 14...........100%
2,8............y%
y = 2,8x100/14 = 280/14 = 20%
c) 2..............100%
5/7.............z%
z = 5/7 x 100/2 = 5/7 x 50 = 250/7 = (245+5)/7 = (35 si 5/7)% = 35,71%
15........x%
x = 15x100/60 = 25%
b) 14...........100%
2,8............y%
y = 2,8x100/14 = 280/14 = 20%
c) 2..............100%
5/7.............z%
z = 5/7 x 100/2 = 5/7 x 50 = 250/7 = (245+5)/7 = (35 si 5/7)% = 35,71%
60......100 %
15........ x %
x = 15·100/60 = 25 %
14...........100 %
2,8..............x %
x = 2,8·100/14 = 20 %
2..............100 %
5/7............. x %
x = 5/7·100/2 = 5/7·50 = 250/7 ≈ 35,71 %
15........ x %
x = 15·100/60 = 25 %
14...........100 %
2,8..............x %
x = 2,8·100/14 = 20 %
2..............100 %
5/7............. x %
x = 5/7·100/2 = 5/7·50 = 250/7 ≈ 35,71 %