Question

In 2 cosuri sunt 80 de oua. Cate sunt in fiecare cos daca in primul sunt cu 20 oua mai multe decat in aldoila.

Answer 1

a+b=80
a=b+20
b+20+b=80
2b=60
b=30
a=b+20=30+20=50

Answer 2

a+b=80
a+20=b
a+20+a=80
2a=60
a=30
=> b=30+20=50