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y=175/36
175/36:125/12=7/15
7/15*100%=46%
2. 700zł*107%=749zł
3. 59,92:107=0,56
0,56*100=56
56*122%=68,32zł
4. 68zł*90%=61,20zł
61,20zł*80%=48,96zł
10 i 5/12 = 125/12
4 i 31/36 = 175/36
125/12 - 100%
175/36 - x%
175/36*100%/125/12 =
175/36*12/125*100% =
po skróceniu
7/3*1/5*100% =
7/15*100% = 700/15 = 46 i 2/3%
2.)
700-100%
x-7%
700*7/100=49zł
700+49=749zł.
3.)
59,92-100%
x-7%
x~4,19
55,73zł
55,73-100%
x-22%
55,73*22/100~12,26zł.
OSTATECZNA CENA
55,73+12,26=67,99zł.
4.)
68-100%
X-10%
X=6,8
68-6,8=61,2zł.
61,2-100%
x-20%
61,2*20/100=12,24
OSTATECZNA CENA
61,2-12,24=48,96zł.