__GIVEN ;-__

⇒ A and B walk around the circular track

⇒ A and B starts to walk around the circular park but in opposite direction

** **

= 9 a. m

⇒ A and B walk in the speed = 2 rounds/ hr and 3 rounds / hr

TO FIND ;-

⇒How many times shall they cross each other before 9.30 a.m.?

SOL ;-

⇒** Let us find their respective speed. -**

Respective speed = Total speed of A + Total speed of B

= 2 + 3 = 5

So respective speed or relative speed is equal to 5 rounds \ hr.

⇒ So by this statement we derive that A and B cross 5 times.

⇒

Hence we can say that A And B cross 5 times in only 1 hr.

A and B cross 2 times in 1 \ 2 hrs

Time lapse between 8 a.m and 9.30 a.m is 1.5 hrs.

__No. of times did A and B cross in 1 hr + ____No. of times did A and B cross in 1 \2 hrs = __

⇒ 5 + 2 = 7 hrs

⇒__Answer ;- Hence A and B cross 7 times __