two cities c and k and distance between them is 1650 km two persons m and s started at the same time from c to k ,m took 8 hours more than s to reach k.
if m travelled at twice the speed ,he reached k 7 hours before
find the speed of s?
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Answer:
183.33333 kmph
Step-by-step explanation:
s=1650
Let time taken for s to get to k be x,
Time taken by m=x+8
Original speed of m=d/t=1650/x+8
Original speed of s=1650/x
(1650/x+8)2+1 hour=1650/x
3300/x+9=1650/x
3300(x)=1650(x+9) (cross multiplication)
3300x=1650x+14850
3300x-1650x=14850
1650x=14850
x=14850/1650
x=9 hours
Speed of s=1650/9
=183.33333.... kmph
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