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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
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
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