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10 muncitori termina o lucrare in 12 zile. cati muncitori vor termina lucrarea in 15 zile?



Răspuns :


10 munc......................................12 zile

x................................................15 zile

x=150/12

x=120/15=8

15z................................10m 
12z................................xm
15/12=10/x=
=150/12
=8