A man covers x km in t hours at s km/hr another man covers x/2 km in 2t jours at r km/hr.The ratio s:r equals to
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speed = distance / time
condition 1 :
s = x / t
condition 2 :
r = x/2 /2t
taking ratio of 1 and 2
s / r = x/t / x/2/2t
= x / t * 4t / x
= 4 : 1
Answer : 4 : 1
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