Question

In ograda lui Gica
Sunt: rate ,iepuri si-o pisica
Capetele-s douazeci
Iar picioarele-s cincizeci
Ati putea raspunde oare
Cate capete-s de fiecare?!


Va rog ,ajutati-ma !

Answer 1

r+i+1=20⇒r+i=19;
2r+4i=50-4=46;
⇒i=19-r;
⇒2r+4[19-r]=46
⇒2r+76-4r=46
⇒76-2r=46⇒2r=30⇒r=15[rate];
⇒i=19-15=4[iepuri];

Answer 2

r+i+1=20
r+i=19
2r+41=50
50-4=46
i=19
19-r
2r+4(19-r)46
2r+76+4r=46
76-21=46
2r=30
r=15(rate)
i=19-15
i=4 (iepuri )