Răspuns:
Explicație pas cu pas:
a)
p= pruna
P= pere
m= mar
-
p= 2P
m=3P
P=P
m+P+p=2520
inlocuim ( p ) cu 2P ....(m) cu 3P
-
3P+P+2P=2520
6P=2520
P=2520:6
P= 420 (para)
-
m=3P
m=3*420
m=1260 (mar )
p= 2P
p=2*420=840 (pruna )
-
b)
b= bostan
a= ananas
B= banana
-
6b/6=60
6b=360
b=360:6
b=60 (bostan)
-
3/4*60=a
a= (3*60)/4
a=180/4
a=45 (ananas)
-
45*1/5= B
B=45/5
B=9 (banana )