Răspunsuri

2014-11-01T08:58:59+02:00
Luna are 4 saptamini si trei zile(luam de exemplu luna cu 31 de zile)
21:7 (7 zile are saptamina)=3(piini pe zi)
31+31=62(zile in 2 luni)
62×21=1302(piini in 2 luni)
placinta

10×31=310(in luna)
31+31=62
10×62=620(placinte in 2 luni)
2014-11-01T09:06:54+02:00
21 paini *8 sapt =168 paini 
10placinte*8 sapt =80 placinte 

(21*4sapt)+(21*4)sapt=84+84=168paini
(10*4)sapt+(10*4sapt)=40+40 = 80placinte