A policeman starts to chase a thief. When the thief goes 10 steps the policeman moves 8 steps and 5 steps of the policeman are equal to 7 steps of the thief. The ratio of the speed of the policeman and the thief is = ?

Answer: Option C

The distance covered by policeman in 5 steps is equal to that of thief in 7 steps
⇒ 5P = 7T
P : T
7 : 5 (distance covered in each step)
⇒ And policeman goes 8 steps while thief moves 10 steps

		Policeman	:	Thief
Steps		8	:	10
Distance in each step		7	:	5
		56	:	50
Speed	=	28	:	25