Question

Mar+ par+ prun= 2520, mar= par+ par+ par, prun= par+ par,afla numere ce se ascund sub fiecare fruct

Answer 1

m+p+pr=2520
m=p+p+p
m=3p
pr=p+p
pr=2p

înlocuim m=3p .pr=2p
avem
m+p+pr=2520
3p+p+2p=2520
6p=2520
p=2520:6

p=420  (par)

m=3p
m=3x420

m=1.260 (mar)

pr=2p
pr=2x420

pr=840 (prun)