Three people Kishore, Rakesh and Ajeet start their journey

Three people Kishore, Rakesh and Ajeet start their journey from Bangalore to Delhi. They
leave Bangalore at 7 am, 11 am and 4 pm respectively. In how many hours after Ajeet starts, will
they meet if their speeds are 25km/hr, 30km/hr and 40 km/hr respectively?

let they meet after x hours after 4 p.m. i.e. after Ajeet starts .
so distance travelled by Kishore = 25( x+ 9)
distance travelld by Rakesh = 30( x+ 5)
diatance travelledby Ajeet = 40 x
so 40 x= 25( x+ 9)
15x = 225
x= 225/15 = 15 hour answer

They will meet after fifteen hours. 40*15=30*(15+5)=25*(15+9)=600.

15 hr?