A man can reach a certain place in 30 hours. If he reduces

A man can reach a certain place in 30 hours.
If he reduces his speed by 1 th, he goes
15
10 km less in that time. Find his speed per hour.

Let the speed of man be x kmph.

∴ 30x − 30		x −	x		= 10
			15

⇒ 30		x − x +	x		= 10
			15

⇒	x	=	10
	15		30

⇒ x =	150	= 5 kmph
	30

If he reduces his speed by	1	th, he goes
	15

5	1	km/hr
	2