# Question #3ee15

Notice that an engineering classroom has $32 - 24 = 8$ more seats than a typical one. If all 16 classrooms were typical ones, then we would have only $24 \times 16 = 384$ seats total, which is $424 - 384 = 40$ seats short. So, we have to turn $40 \div i \mathrm{de} 8 = 5$ classrooms into engineering ones.