jawab yg dilingkari aj yaaa jangan lupa pake cara

[tex]15) \frac{27}{6} \\ 4 \ \frac{3}{6} \\ \\ 17)15\% \times 3000 \\ = 450 \\ \\ 18)25\% \times 300000 \\ = 75000 \\ = 300000 - 75000 \\ = 225000 \\ \\ [/tex]
19)48:42
=48÷2:42÷2
=24:21
=24÷3:21÷3
=8:7

20)
[tex] \frac{20}{25} \div \frac{10}{15} \\ = \frac{20}{15} \times \frac{15}{10} \\ = \frac{20}{10} \\ = 2 [/tex]