Question 5
Un'azienda dolciaria produces two tipi di torrone, using the stessa bianca pasta and the stesse nocciole, but in diverse proportions. In the ring of type $A$ the number shows the $30\%$ of the weight and the $40\%$ of the volume; In the $B$ type, the number indicates the $60\%$ weight. What percentage of the volume represents the noise in the tower of type $B$?