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1/2 + 2 = 1/2 + 4/2 = 5/2
b=2,5/10+10/2,5 = 2,5 / (4 * 2,5) + (4 * 2,5)/ 2,5 =
1/4 + 4 = 1/4 + 16/4 = 17/4
b/a * 100 % = (17/4) / (5/2) * 100% =
[(17/4) : (5/2)] * 100% = (17/4 * 2/5) * 100% =
17/10 * 100% = 170%
Liczba b stanowi 170% liczby a.
a=2,5
b=0,25+4
b=4,25
4,25/2,5 * 100% = 425/2,5 = 170%