Odpowiedzi

2010-03-09T21:01:55+01:00
A)100%-x
3%-120
3%x= 12000//:3
x=400
b)100%-x
23%-4,6
23%x=460//:23
x=20
c) 100%-x
250%-12
250%x=1200//:250
x=4,8
d) 100%-x
105%-21
105%x=2100//:105
x=20
e) 100%-x
20%-400
20%x= 40000//:20
x=2000
f) 100%-x
35%-70
35%x=7000//:35
x=200
g)100%-x
13%-52
13%x=5200//:13
x=400
h)100%-x
220%-44
220%x=4400//:220
x=20
i)100%-x
71%-7,1
71%x=710//:71
x=10
2010-03-09T21:05:06+01:00
A) 3% ------ 120
100% --- x
x = 100% * 120 / 3%
x = 4000
b) 23% --- 4,6
100% --- x
x = 100%*4,6/23%
x = 20
c) 250% --- 12
100% --- x
x = 100%*12/250%
x = 4,8
d) 105% --- 21
100% --- x
x = 100%*21/105%
x = 20
e) 20% --- 400
100% --- x
x = 100%*400/20%
x = 2000
f) 35% --- 70
100% --- x
x = 100%*70/35%
x = 200
g) 13% --- 52
100% --- x
x = 100%*52/13
x = 400
h) 220% --- 44
100% --- x
x = 100%*44/220%
x = 20
i) 71% --- 7,1
100% --- x
x = 100%*7,1/71%
x = 10