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darky1:
the answer of this question is 10
read the question very carefully ,it said in remaining time,3/5 of 10 is 6 hour,hours left are 4 hours,4 hours divide by half distance which is 40km,we get the answer 10
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refer the attachment
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hey!!!.
good night.
____________________________________________________________
total distance cover in 10 hour =80 km .
if it covers 40 km in 3/5th of time I.e.,40 km in 6h.
so,
remaining time =10_6=4h
remaining distance =40 km
so required speed = 40 /4km/h=10km/h.
I hope help u ...
ok
good night.
____________________________________________________________
total distance cover in 10 hour =80 km .
if it covers 40 km in 3/5th of time I.e.,40 km in 6h.
so,
remaining time =10_6=4h
remaining distance =40 km
so required speed = 40 /4km/h=10km/h.
I hope help u ...
ok
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