Question

Qua a temperatura na escala fahrenheit que corresponde a 40°C? A) 313. B) 4,444. C) 39,2. D) 2,25. E) 104.

Answer 1

Tc-0/100=Tf-32/180
40/100=Tf-32/180     (100 e 180 dá pra dividir por 20)
40/5=Tf-32/9
360=5Tf - 160
360+160=5Tf
520/5=Tf
Tf=104° F

Answer 2

C/5 = F-32/9
40/5=F-32/9
8=F-32/9
F-32=72
F=72+32
F=104°F