Two friends A and B start on a circular track at the same time in the same direction. If the speed of A is 12m/s and both A and B meet only at starting point, how many values can the speed of B take if the speed of B is less than 30 m/s. The answer given is 11 times. I am not able to get the solution. Can anyone help please.

thank u kaplana

A=12m/s,B<30m/s , becoz they are travelling in SAME direction therefore we will subtract their speed i.e (12- x)m/s ,,,, then we know that a and b meet only at starting point therefore a:b=1(met once) (u can refer mock test 12 of ibps po ) hence 12-x should be 1,,,,, so (12-x)=1 i.e 11 so b can take 11 values if they meet only once in their track! :)