Question

meri+peri+gutui=660 
m=5pe11 din nr total de pomi
p=3pe5 din meri

meri? peri? gutui?

Answer 1

    
$m= \frac{5}{11}*660= \frac{5*660}{11} = 5*60=300\,\, meri \\ \\ p= \frac{3}{5}*300= \frac{3*300}{5}=3*60=180\,\,pruni \\ \\ g=660-m-p=660-300-180=360 - 180 = 180 \,\, gutui$