Height of the shelf for bookshelves is 30 cm. The height of one bookshelf is 40 cm.

Height of the shelf for bookshelves is 30 cm. The height of one bookshelf is 40 cm. What is the largest number of bookshelves that can be placed on the shelf if the room is 3 m high?

Decision.

1) Let’s translate 3 m into cm:

3 m = 3 * 100 cm = 300 cm – the height of the room.

2) Subtract the height of the stand from the height of the room:

300 – 30 = 270 (cm) – this is how much space is left for bookshelves.

3) Find how many shelves fit in the remaining space:

270: 40 = 6, 30 in the remainder (cm).

Answer: 6 shelves will fit on a stand in the room, and 30 cm will remain empty.