pls solve this third question
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Step-by-step explanation:
let distance=d and time =t
therefore, s=d/t
15km/h= d/t-1.6hr
d= 15km/hr (t-1.6hr)
And again
s= d/t
12km/hr= d/t+2hr
d=12km/hr ( t+2hr)
from both equation we have
15km/hr(t-1.6hr)=12km/hr(t+2hr)
5(t-1.6hr)= 4(t+2hr)
5t-8hr=4t+8hr
t= 16hr
therefore distance= speed× time
= 15km/hr× (16-1.6)hr
= 15km× 14.4
=216km
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