1. 2 1/2 x 2 windu = .... tahun 2. 25% + 1/4 = 3. 0,15 + 2 1/3 - 25% =

5 windu = 5 x 8 = 40 tahun

[tex]25\% + \frac{1}{4 } \\ = \frac{25}{100} + \frac{1}{4} \\ = \frac{1}{4} + \frac{1}{4} \\ = \frac{2}{4} = \frac{1}{2} [/tex]



[tex]0.15 + 2 \frac{1}{3} - 25 \%\\ = 0.15 + 2.3 - 0.25 \\ = 0.38 - 0.25 \\ = 0.13[/tex]