Textbooks are stored on two shelves. Each self is 0.72meters long. Each textbooks is 30 millimetres wide. Can 50 texts books be stored on these shelves?

Cannot.

Step-by-step explanation:

1 shelf = 0.72m

2 shelves = 0.72m x 2 = 1.44m

1 textbook = 30 x 10^-3m = 0.03m

50 textbook = 50 x 0.03m = 1.5m

1.5 > 1.44m which means the textbook is 0.06m more than the shelves thus cannot be stored.