Question

Qual a temperatura cuja indicação da escala fahrenheit é o dobro da correspondente indicação da escala Celsius?

Answer 1

Escalas  0°C   ⇔    32°F

160 * 1,8 = 288

288+32=320
 
             160°C  ⇔   320°F

Espero ter ajudado !

Answer 2

$\tt 9tc\:=\:5\cdot \left(2tc\:-\:30\right)\\\\\\\tt 9tc=10ct-150\\\\\\\tt 9tc-10ct=10ct-150-10ct\\\\\\\tt -ct=-150\\\\\\\displaystyle \frac{-ct}{-t}=\frac{-150}{-t}\\\\\\\boxed{\tt C=150^\circ}$