Odpowiedzi

2009-11-25T14:31:53+01:00
A)
40% = 16
100% = x
40x=1600/40
x=40

b)
15% = 36
100% = x
15x=3600/15
x=240

c)
32% = 8
100% = x
32x=800/32
x=25

d)
210% = 63
100% = x
210x=6300/210
x=30

e)
140% = 53,2
100% = x
140x= 5320/140
x=38

f)
0,4% = 23,34
100% = x
0,4x= 2334/0,4
x=5835
  • Użytkownik Zadane
2009-11-25T14:34:46+01:00
A) 40 %-16
100%-x
X*40%=100%*16
X=160:4=40


b)15%-36
100%-x
15%*x=100%*36
X=100%*36:15%=720:3=240

c) 32 % - 8
100%-x
X=100%*8:32%=25
d)
210% = 63
100% = x
x=100%*63:210
x=30

e)
140% = 53,2
100% = x
x= 100%*53,20:140%
x=38

f)
0,4% = 23,34
100% = x
x= 100%*23,34:0,4%
x=5835
2009-11-25T14:47:49+01:00
A)
40% * x = 16
40/100 * x = 16
x= 16 * 100/40
x= 40

b)
15% * x = 36
15/100 * x = 36
x= 36 * 100/15
x=240

c)
32% * x= 8
32/100 * x= 8
x= 8 * 100/32
x= 25

d)
210% * x= 63
210/1000 * x= 63
x= 63 * 1000/210
x= 300

e)
140% *x = 53,2
140/1000 * x = 53,2
x= 53,2 * 1000/140
x = 380

f)
0,4 % * x = 23,34
4/1000 * x = 23,34
x= 23,34 * 1000/4
x= 5835