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
- 20517 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / 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 |
Let divide the question in two parts:-
1:-travelling at 4/5th of actual speed from the problem point car is late by 45 min.
2:That is clear it will take 9 min less to cover up the distance with actual speed if car fails after 45 km.
soln:-
difference in 1st cond and second condition is 15 km and 9 min
if car travels with 4/5th speed it will take 5/4 time of actual means 1/4 time more than actual
but here only 9mins more so actual time =36 min
to cover up 15 km in 36 min
speed=15/(3/5)
speed=25km/hr
from second,it is late by 45 min with 4/5 speed
so 1/4 more than actual so
actual time would be= 180 min=3hr
25*3=75km from problem point
so total distance is=30+75=105km
| Is This Answer Correct ? | 6 Yes | 2 No |
Answer / sunil kumar
intial velocity is 100 km/hr, distance between A and B is
90 km
| Is This Answer Correct ? | 3 Yes | 12 No |
hiiiiiii, i have completed post graduation in a marketing from mumbai university in 2011 but right now i don't want to do a marketing i want to join KPO account & FINANCE. my graduation is B.Com.WHAT SHOULD BE REASONS WHICH SATISFY THE RECRUITER.PLZ REPLY I M WATING
A THROUGH HOLE OF 6" LENGTH IS DRILLED THROUGH THE CENTRE OF A SPHERE.WHAT WILL BE THE REMAINING VOLUME OF THE SPHERE? ONLY ONE DATA IS GIVEN AND THERE IS NO INFORMATION MISSING.
(Momentum*Velocity)/(Acceleration * distance ) find units.
A person needs 6 steps to cover a distance of one slab. if he increases his foot length(step length) by 3 inches he needs only 5 steps to cover the slabs length. what is the length of the each slab.
what is the least perfect square divisible by8, 9 and 10?
Can you tender a one rupee note in such a manner that there shall be total 50 coins but none of them would be 2 paise coins.?
which one of the following usages was a vedic development?
Please send me last 2 years clerical cadre solved question papers.
the probability of getting at least in a single through of three coins is
copal partner interview question& aptitude question paper pattern
1 Answers Copal Amba, Copal Partners, CX,
The average salary of Ram, Shyam and Sundar is 95 Rs. per week. If Ram earns Rs.115 and Shyam earns Rs.65.What is the salary of Sundar.
If POINT + ZERO = ENERGY, then E + N + E + R + G + Y = ?
English 
