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Suppose-the-population-models-of-London-and-Hongkong-in-tens-of-thousands-are-p-t-20t-t-1-and-q-t-240t-t-8-respectively-for-t-years-after-2015-Determine-the-time-period-in-years-when-th




Question Number 77033 by necxxx last updated on 02/Jan/20
Suppose the population models of London  and Hongkong in tens of thousands are  p(t)=((20t)/(t+1)) and q(t)=((240t)/(t+8)) respectively for  t years after 2015, Determine the time period  in years when the population of London  exceeds that of HongKong.
SupposethepopulationmodelsofLondonandHongkongintensofthousandsarep(t)=20tt+1andq(t)=240tt+8respectivelyfortyearsafter2015,DeterminethetimeperiodinyearswhenthepopulationofLondonexceedsthatofHongKong.
Commented by MJS last updated on 02/Jan/20
for 2015 (t=0) both are zero?!  the limits for x→∞ are p(∞)=20, q(∞)=240  p(t)=q(t) ⇒ t=0∨t=−(4/(11))
for2015(t=0)botharezero?!thelimitsforxarep()=20,q()=240p(t)=q(t)t=0t=411

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