Question

Neeta travelled the first 3 hours of her hours of her journey at 60 km/h. She travelled the next 5 hours at 35 km/h. What was the total length of her journey? Now calculate what her average speed was.​

Answer 1

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Answer 2

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Neeta travelled the first 3 hours of her hours of her journey at 60 km/h. She travelled the next 5 hours at 35 km/h. What was the total length of her journey? Now calculate What her average speed was?

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• Total distance= 355km
• Avg speed= 44.375 km/hr

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• Three hours with speed 60 km/hr
• five hours with speed 35 km/hr

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• Total length of journey
• Average speed.

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$\large{ \sf{ \underline{1st \: part}}} \\ \large{ \sf{ \implies{speed \: of \: neeta = 60 \: km \: h {}^{ - 1} }}} \\ \\ \large{ \sf{ \implies{time \: taken = 3 \: hours}}} \\ \\ \large{ \sf{ \boxed{ \green{speed = \frac{distane}{time} }}}} \\ \red{ \large{ \sf{ \implies{then \: distance = speed \times time}}}} \\ \\ \large{ \sf{ \implies{distance = 60 \times 3 = 180 \: km}}} \\ \\ \large{ \sf{ \underline{2nd \: part}}} \\ \\ \large{ \sf{ \implies{speed \: of \: neeta = 35km \: h {}^{ - 1} }}} \\ \\ \large{ \sf{ \implies{time \: taken = 5 \: hours}}} \\ \\ \large{ \sf{ \implies{distance = 35 \times 5 \: km = 175 \: km}}} \\ \\ \large{ \leadsto{ \green{ \bold{total \: distance = 180 + 175 = 355 \: km}}}} \\ \\ \large{ \sf{we \: know...}}\\ \large{ \sf{ \boxed{ \red{avg. \: speed \: = \frac{total \: distance}{total \: time \: taken} }}}} \\ \\ \large{ \sf{ \implies{total \: distance = 355km}}} \\ \\ \large{ \sf{ \implies{total \: time \: taken = 3 + 5 = 8 \: hours}}} \\ \\ \large{ \leadsto{ \bold{ \green{avg. \: speed = \frac{355 \: km}{8 \: hrs} = 44.375 \: km \: hr {}^{ - 1} }}}}$

$\large{ \bold{ \pink{required \: answer \: is \: 355km \: and \: 44.375km \: h {}^{ - 1} }}}$