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2010-04-13T13:19:13+02:00
A)3% wynosi 120 = 3/100 *120 =3 3/5
b)23% wynosi 4,6 = 23/100 * 4,6 = 1,058
c)250% wynosi 12 = 250/100 * 12 = 30
d)105% wynosi 21 = 105/100 * 21 = 22 1/20
e)20% wynosi 400 = 20/100 * 400 = 80
f)35% wynosi 70 = 35/100 * 70 =24 1/2
g)13% wynosi 52 = 13/100 * 52 = 6 19/25
h)220% wynosi 44 = 220/100 * 44=96 4/5
i)71% wynosi 7,1 = 71/100 * 7,1 =5,041

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2010-04-13T13:22:27+02:00
A)
3% to 120
100% to x

3x=12000
x=4000
b)
23% to 4,6
100% to x

23x=460
x=20
c)
250% to 12
100% to x

250x=1200
x= 4,8
d)
105% to 21
100% to x

105x=2100
x= 20
e)
20% to 400
100% to x

20x= 40000
x= 2000
f)
35% to 70
100% to x

35x=7000
x=200
g)
13% to 52
100% to x

13x=5200
x= 400
h)
220% to 44
100% to x

220x=4400
x= 20
i)
71% to 7,1
100% to x

71x=710
x=10
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