12.
25=a√2
25:√2=a
P1=(25:√2)²=625:2=312,5
P2=20²=400
p2>p1
13.
a)
1p=⅜
x=1
1=⅜x
2⅔=x
trzeba kupić 3 puszki
b)
18,50zł•3=55,50zł
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12.
25=a√2
25:√2=a
P1=(25:√2)²=625:2=312,5
P2=20²=400
p2>p1
13.
a)
1p=⅜
x=1
1=⅜x
2⅔=x
trzeba kupić 3 puszki
b)
18,50zł•3=55,50zł