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123
63
250
150
45
121
10
26
330
350
255
14
42
12:1=12
Odp- 12%
I tak wedle reguły:
b) 100% l. 123 to 123
c) 42:2 = 21 (czyli 50%)
3x 21 (50%=150%) = 63
d) 1000:4 = 250
e) 150:10 = 15
15x3=35
5x2=10
52:2=26
33x10=330
350
100 x 2.55 = 255
3,5 x 4 = 14
8,4 x 5 = 60