A person covers 9 , km with a speed of 3 , km | vedclass

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Question

(A) The formula for average speed is given by the total distance covered divided by the total time taken.Total distance $D = 9 \, km + 25 \, km + 30 \

Vedclass · Accepted Answer

$5 \frac{9}{11}$

Vedclass · Answer

(A) The formula for average speed is given by the total distance covered divided by the total time taken.Total distance $D = 9 \, km + 25 \, km + 30 \, km = 64 \, km$.Time taken for each segment is calculated as $t = \frac{	ext{distance}}{	ext{speed}}$.$t_1 = \frac{9 \, km}{3 \, km/h} = 3 \, h$.$t_2 = \frac{25 \, km}{5 \, km/h} = 5 \, h$.$t_3 = \frac{30 \, km}{10 \, km/h} = 3 \, h$.Total time $T = 3 \, h + 5 \, h + 3 \, h = 11 \, h$.Average speed $= \frac{D}{T} = \frac{64 \, km}{11 \, h} = 5 \frac{9}{11} \, km/h$.

$A$ person covers $9 \, km$ with a speed of $3 \, km/h$,$25 \, km$ with a speed of $5 \, km/h$,and $30 \, km$ with a speed of $10 \, km/h$. Find the average speed of the person in $km/h$.

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