A man can reach certain place in 50hours. If he reduces his speed by 1/10th, he goes 100km less in time. Find his speed? Choose the correct answer
A) 20km/hr
B) 30km/hr
C) 40km/hr
D) 50km/hr
E) 60km/hr
Let the speed be x km/hr   50x-50* 9/10 *x = 100   50x - 45x = 100   5x = 100   x = 20km/hr   20km/hrnswer is 20km/hr
<result>A</result>
A man can reach certain place in 50hours. If he reduces his speed by 1/10th, he goes 100km less in time. Find his speed?