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The temperature dropped from 90° at noon to 50° by midnight. What is the percent decrease in temperature
Round your answer to the nearest whole percent and include your percent sign,

Respuesta :

Percent decrease
= [(90-50) / 90 ] x 100%
= (40 / 90) x 100%
= 44.4%
= 44%
  • Initial temperature=t_i=90°C
  • Final temperature=t_f=50°C

Total change in temperature

  • ∆T=90-50=40°C

Percentage:-

[tex]\\ \sf\longmapsto \dfrac{\Delta T}{t_i}\times 100[/tex]

[tex]\\ \sf\longmapsto \dfrac{40}{90}\times 100[/tex]

[tex]\\ \sf\longmapsto \dfrac{400}{9}[/tex]

[tex]\\ \sf\longmapsto 44.4\%[/tex]

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