Question

Intr-o curte sunt gaini si iepuri ,stiind ca sunt 55 de capete si 140 de picioare.

Answer 1

g+i=55                                          g-gaini               i-iepuri

2g+4i=140

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g=40

i=15

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2g+2i+2i=140

2(g+i)=2i=140

2×55+2i=140

110+2i=140

2i=30

i=15

g=55-15

g=40