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y= 120
60% x = 120
1% x=2
x= 200
odp: Było 200 gruszek
x - 100%
10x = 1200% II:10
x = 120
120 - 60%
x - 100%
60x = 12000 II:60
x = 200
Na wierzbie rosło 200 gruszek