3 copies-1 copy = 2 copies.
1+ 1 = 2.
So everyone has:
A 60 * 2/(1+3) = 30kg.
B 60 * 2-30 = 90kg
Each original:
B: 90/2=45 kilograms.
Answer: 30+45=75 kg.
1, chasing dreams and seeking fate
2. Patience and backbone
Step 3 live bravely
4. Ideal wings
Step