Odpowiedzi

2010-04-11T13:41:42+02:00
1,45*40=58 I stado
1,3*60=81 II stado

81+58=139

39/100*100%=39%
2010-04-11T13:46:09+02:00
40owiec-100%
x owiec-45%
100x=1800 / 100
x=18

60owiec- 100%
x owiec- 35 %
100x= 2100 / 100
x=21

21+18=39
100owiec- 100%
39owiec - x
100x= 3900 / 100
x= 39%
odp: liczebnosc dwoch stad wzrosla o 39 procent.
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2010-04-11T13:48:28+02:00
40*45/100=90/5=18
40+18=58
60*35/100=105/5=21
60+21=81
81+52=133 60+40=100
133-100=33
33/100=0,33
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