Question

am de rezolvat 24 probleme in 2 zile. daca a 2 zi am rezolvat un nr dublu fata de prima zi,afla nrde probleme efectuate zilnic

Answer 1

a |-----|
b |-----|-----|         } 24.

24 : 3 = 8 probleme ( in prima zi)
8 x 2 = 16 probleme ( a doua zi )
Verificare : 16 + 8 = 24.

Answer 2

pri,a zi      I---I
 a doua zi I---I---I  }24
aflam cate pr a rezolvat in prima zi
24:3 = 8
aflam cate pr a rezolvat a doua zi
8*2 = 16