Question

daca fermierul are 15 gaini si 12 rate, cate picioare de rate si de gaini are fermierul?

Answer 1

1 gaina => 2 picioare
1 rata => 2 picioare
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( 15 x 2 ) + ( 12 x 2 ) = 30 + 24 = 54 ( picioare )

Succes! :))

Answer 2

1.(15x2)+(12x2)=30+24=54
2.(15+12)x2=27x2=54