Question

A small diagram in a textbook is 3 cm x 4 cm. The teacher takes the textbook to the copier to enlarge the diagram. If the teacher hits 150% in the copier, what are the new dimensions of the diagram after being copied?

Answer 1

4.5 cm x 6 cm

Explanation:

Notice that the 150% enlargement can be written as a fraction:
`(150)/(100) = 1.5`

That gives us a clue about what value to multiply each side of the textbook by in order to obtain the new enlarged dimensions.

Therefore, the side which is 3 cm now becomes:
`3 cm * 1.5 = 4.5 cm`

and the side which is 4 cm now becomes:
`4 cm * 1.5 = 6 cm`