A car travel along four side of a square at speed of 200,400,600 and 800 km/hr. find average speed? ans is 384 km/hr
Answers
Answered by
22
in this problem we solve
total distance is not down by
lcm of speed is total distance
200 , 400 , 600 , 800
lcm = 2400 km is distance
this distance complete in
2400/200 = 12 hours
2400/400 = 6 hours
2400/600 = 4 hours
and
2400/800 = 3 hours
total time = ( 12 + 6 + 4 + 3 = 25 hours )
2400 × 4
-------------
25
= 9600/25 = 384 km/hr
total distance is not down by
lcm of speed is total distance
200 , 400 , 600 , 800
lcm = 2400 km is distance
this distance complete in
2400/200 = 12 hours
2400/400 = 6 hours
2400/600 = 4 hours
and
2400/800 = 3 hours
total time = ( 12 + 6 + 4 + 3 = 25 hours )
2400 × 4
-------------
25
= 9600/25 = 384 km/hr
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0
Answer:
smita travels a long four sides of a squar at speed of 10,12,15 and 20 km/he.the average speed of the smit is?
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