pakai cara.....ya....no. 14 and 15

a.
[tex]80\% \times 3.500.000 = \frac{80}{100} \times 3.500.000 \\ = 2.800.000 \\gaji \: ayah \: yang \: ditabung \: = 3.500.000 - 2.800.000 \\ = 700.000[/tex]
b.
[tex]9 \frac{1}{2} \times \frac{1}{8} = \frac{19}{2} \times \frac{1}{8} \\ = \frac{19}{16} \\ = 1 \frac{3}{16} [/tex]