Oblicz , jaka to liczba , której : a ) 5% wynosi 12, b) 0,5 % wynosi 4 ,c) 150% wynosi 600 Proszę , o pomoc dam naj To pilne !
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a) 5%-12
100%-x
x=12*100%/5%+240
b)0,5%-4
100%-x
x=4*100%/0,5%=800
c)150%-600
100%-x
x=600*100%/150%=400
a)
5% = 12 |:5
1% = 2,4 | * 100
100% = 240
b)
0,5% = 4 |*2
1% = 8 |* 100
100% = 800
c)
150% = 600 |: 1,5
100% = 400
Pozdro.