Tolong ya, pake cara

[tex] \frac{X-X_{min}}{X_{max}-X_{min}} = \frac{Y-Y_{min}}{Y_{max}-Y_{min}} \\ \frac{20-0}{80-0} = \frac{Y-20}{120-20} \\ \frac{20}{80} = \frac{Y-20}{100} \\ \frac{1}{4} = \frac{Y-20}{100} \\ \frac{1}{1} = \frac{Y-20}{25} \\ Y-20 = 25 \\ Y=25+20=45 [/tex]

maka suhu termometer Y saat termometer X menunjukkan angka 20 adalah 45