answersLogoWhite

0

four and one half

4.5

4 1/2

50% is always one half.

a good rule is 10% of something is moving the decimal place to the left one

ex.

10% of 90 is 9

so 20% would be 10% x 2

20% of 90 is 18

see how that works?

30% of 90 is 10% x 3

27.

User Avatar

Wiki User

14y ago

What else can I help you with?