Răspuns:
Explicație pas cu pas:
P = numarul pomilor
Fagi = 2P/7
rest P - 2P/7 = 7P/7 - 2P/7 = 5P/7
Stejari = 3/4*5P/7 = 15P/28
rest 5P/7 - 15P/28 = 20P/28 - 15P/28 = 5P/28
Artari = 5P/28 = 50
P = 28*50/5 = 280 pomi
Fagi = 2*280/7 = 80
Stejari = 15*280/28 = 150