Interested to Buy Any Domain ? << Click Here >> for more details...
If a car starts from A towards B with some velocity.Due to
some problem in the engine after travelling 30km, the car
goes with 4/5 th of its actual velocity The car reaches B
45 min later to the actual time.If the car engine fails
ofter travelling 45km, the car reaches the destination B
36min late to the actual time .What is the initial velocity
of car and what is the distance between A and B in km ?
- 5 Answers
- 20703 Views
- IBM, I also Faced
- E-Mail Answers
Answer Posted / ashish madhavi
the answer is
initial velocity is 25 km/hr
and distance is 105 km
explanation
let distance = xKm and Velocity = yKm/hr
form 2 equations
total time = time from start to first break point+ time
from first breakpoint to destination
(time = distance/speed)
total time fromassumption = (x/y)
for first case
total time = (x/y)+(3/4){36 minutes converted into hrs}
time from start to first break point = (30/y)
time from first break point to destination = (x-30/(4/5y))
{since velocity has decreased to 4/5}
hence
x/y + 3/4 = 30/y + (x-30/(4/5y)) .......... equatiion 1
similarly equation 2 is derived from 2nd case given as:
x/y + 3/5 = 45/y + (x-45/(4/5y)) .......... equatiion 2
solving v get x=105
and y = 25
its seems to be lengthy in reading the solution but trust
me it wont take more than 2 mins to solve the question
| Is This Answer Correct ? | 25 Yes | 5 No |
Post New Answer View All Answers
If m/n = 5/4 , then 2m+n= ?
A lorry starts from Bangalore to Mysore at 6.00 A.M,7.00am.8.00 am.....10 pm. Similarly one another starts from Mysore to Bangalore at 6.00 am,7.00 am, 8.00 am.....10.00pm. A lorry takes 9 hours to travel from Bangalore to Mysore and vice versa. A lorry which has started at 6.00 am will cross how many lorries.
Two circles , one circle is inscribed and another circle is N outscribed over a square. What is the ratio of area of inner to outer circle.
Radha,Geeta&Revathi went for a picnic.After a few days they forgot the date,day and month on which they went to picnic.Radha said that it was on Thursday,May 8 and Geeta said that it was Thursday May 10.Revathi said Friday Jun 8.Now one of them told all things wrongly,others one thing wrong and the last two things wrongly.If April 1st is tuesday what is the right day,date and month? thought that he should not waste his time and started moving towards his residence at the speed of 3mi/hr.On the way,he gets the coach and reaches home at 6 o'clock.How far is his residence from railway station.
In base 10 representation for a rupee 100 paise,then base 8 representation what is rupee value?
sir plz send the rrb exam question papers my emailid is abhilasha.bollepalli@gmail.com
why we will appoint you.
the difference b/w the compound interest payble half yearly and the simple interest on a certain sum cont out at 10% p.a for 1 year is Rs 25 what is the sum
one man or two women or three boys can do a work in 44 days then one man, one women and one boy together can fininsh the same work in ---- days
Conversation between two mathematicians: first : I have three children. The product of their ages is 36 .. If you sum their ages . it is exactly same as my neighbour's door number on my left. The second mathematician verifies the door number and says that the not sufficient . Then the first says " o.k one more clue is that my youngest is the youngest" Immediately the second mathematician answers . Can you answer the question asked by the first mathematician? What are the children ages?
There are 6561 cricket balls out of them 1 is heavy. Find the minimum no. of times the cricket balls have to be weighed for finding out the heavy ball.
What is the 8th term in the series 1, 4, 9, 18, 35, 68, . . .
There are 4 married couples out of which 3 a group is needed . But thier should not be his of her spouse .How many groups are possible ?
write a program that prompts the user to enter three sides of a triangle and prints whether it is a right triangle or not.
Two trains are travelling at equilateral .Train A is travelling in the direction of earths spin.Other train B is travelling in opposite direction of earths spin.Which trains wheels will wear first?and why?
