Two persons , Ram & Lakshman , who are at a distance of 100 km from each other, move towards each
other from two places P and Q at speeds of 20 kmph and 25 kmph respectively. Lakshman reaches P,
returns immediately and meets Ram at R, who started on the return journey to P immediately after
reaching Q. What is the distance between Q and R?
Answers
Answer:
100/3 km
Step-by-step explanation:
Two persons , Ram & Lakshman , who are at a distance of 100 km from each other, move towards each other from two places P and Q at speeds of 20 kmph and 25 kmph respectively
Ram Start from P at 20 km/Hr
Laksham Start from Q at 25 km /hr
Let say after T hr they meet
Total Diatnace covered = 100 + 100 + 100 = 300 km
20T + 25T = 300
=> 45T = 300
=> T = 20/3 hr
Ram reaches Q in 100/20 = 5 hrs
Ram traveled from Q to R for 20/3 - 5 = 5/3 hrs
QR = 20*5/3 = 100/3 km
Answer:
33 1/3
Step-by-step explanation:
Lakshman reach P after 4hr and Ram is still to reach Q
when Ram reach Q , the Lakshman travel 25km from P as back-trip
now remaining is 75km
now lets say the meet at R which is at a distance X from P and therefore at a distance 75-x from Q
and they meet at a time t
then
x/25 = (75-x)/20
x=125/3
that is at a distance
25+(125/3) from p
ie, 200/3 from p
from Q this is at 100-(200/3)
=100/3
solving this we get