Question

un baiat are iepuri si porumbei,intrebat citi iepuri si citi porumbei are el a araspund ca are in total 15 capete si 34 de picioare.citi porumbei si citi iepuri are baiatul?

Answer 1

a = nr iepuri ; b = nr porumbei
a + b = 15 (fiecare are un singur cap)
4 * a + 2 * b = 34 (iepurii au 4 picioare, porumbeii doar 2)

b = 15 - a
4a + 2(15 - a) = 34 => 2a = 4 => a = 2
b = 15 - a = 13

Answer 2

15-2=13
13 porumbei
2 iepuri
13+2=15 capete
13×2=26
2×4=8
26+8=34 picioare