Question

Zadania w zalaczniku dam naj

Answer 1

ZAd 1. 

a)

40---100%

x-----35%

/ oznacza kreske ułamkową 

x=40*35%/100%=14

b)65---100%

      x---24%

x=65*24%/100%=15,6

c)

75----100%

   x----160%

x=75*160%/100%=120

d)

50----100%

x-----0,5%

x=50*0,5%/100%=0,25

e)

64---100%

x----12,5%

x=64*12,5%/100%=8

Zad. 2

 

90----100%

x----65%

x=902*65%/100%=58,5

Zad.3

40---100%

x-----45%

x=40*45%/100%=18

40---100%

x----30%

x=40*30%/100%=12

40-(12+18)=40-30=10

dzieci -18

mężczyzn -12

kobiet -10

zad.5. 700zł-100%

                x----125%

x=700zł*125%/100%=875zł

875zł-100%

x---80%

x=875zł*80%/100%=700zł