The bookshop received a shipment of identification books. 1/3 of them were bird books, 1/2 of the rest of the books
were about plants, and 1/4 of the remaining books were mammal books. The 12 books that were left were insect
books. How many books were in the shipment?

The bookshop received a shipment of identification books 13 of them were bird books 12 of the rest of the books were about plants and 14 of the remaining books class=