L=3×latime=3a (notam latimea cu a)
=> 2(a+3a) = 1200
2a + 6a = 1200
8a = 1200 => a=150 => latimea=150
=> L (lungimea) = 150 × 3 = 450
a) pomi plantati pe lungime = 450 : 6
= 75 pomi
b) pomi plantati in total :
Pomi plantati pe latime = 150 : 6 = 25
Total pomi = 2 × ( 75 + 25 ) = 200 pomi