A boy can reach a certain place in 30 hours. If he reduces his speed by 1/30th, he goes 3 km less in that time. Find his speed.
Select.
A) 3 km/hr.	B) 6 km/hr	C) 8 km/hr	D) 14 km/hr	E) None of these
Explanation :   Solution: Let the speed be x km/hr. then,   30x - (30 * 29x/30) = 3   =&gt; x = 3 km/hr.   3 km/hr.nswer : 3 km/hr.
<result>A</result>
A boy can reach a certain place in 30 hours. If he reduces his speed by 1/30th, he goes 3 km less in that time. Find his speed.