Can you solve this?
An artist made a replica statuette for the Queen of Britain and was coming back to his hometown in portugal. The queen had awarded him with 3 lbs of gold, 6 lbs of silver, 15 lbs of wheat and 10 lbs of rice. The ship's captane saw this as an opportunity to earn a little extra money and asked him to pay 2 pesos (currency at that time) per lbs. All his belongings were measured. How many pesos did he have to pay?