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Sagot :
Answer:
1. 5 hours
2. 4 hours
Reason:
Formula for speed is speed = [tex]\frac{distance}{time}[/tex] , if you want to find time, then take distance / speed, which will equal to 100 / 20 = 5 hours, and the same with 2.
[tex]\\ \rm\hookrightarrow Speed=\dfrac{Distance}{Time}[/tex]
[tex]\\ \rm\hookrightarrow Time=\dfrac{Distance}{Speed}[/tex]
So
#1
[tex]\\ \rm\hookrightarrow Time=\dfrac{100}{20}=5h[/tex]
#2
[tex]\\ \rm\hookrightarrow Time=\dfrac{180}{45}=4h[/tex]
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