anandarao

 Profile Answers by anandarao 

• Dec 28th, 2005

 

let x mile be the distance of picinic spot.onward jrny =x/40 hrreturn jrny = x/30 hrtotal x(1/40+1/30)=8 hr so x=137.14 mile

MAHAVEER PATIL

• Feb 3rd, 2006

 

with early start of car on sunday morning at 6am &with 3and half hrs journey he can travel upto 140 miles .

After picnic at 30 miles /hr he can return back to home in 4.5 hrs.

SO DESTINY SHALL BE 130 TO 140 MILES AWAY TO REACH BACK ON SUNDAY NIGHT.

anitha

• Mar 31st, 2006

 

Can u tell me how you got the ans 120miles.

anitha

• Mar 31st, 2006

 

can u tell me how do u get the ans as 120 miles

ritu

• Apr 10th, 2006

 

time=distance/speed, suppose the distance is X.it should be such that total time should not exceed 8  hours.

now the speed is  30 and 40

therefore X/30 + X/40 =8 which gives u X=120 miles

hariharan

• Jun 16th, 2006

 

it is

hariharan

• Jun 16th, 2006

 

it is very simple ma. cant you the answer for this simple problem???????? what a shame ya

vinay

• Jun 24th, 2006

 

yes the answer is 137.15km ,in case the total time of journey is 8 hours exactly.the distance of the picnic spot shud b less than 137.15 kms.

 

Neetu Kumari

• Jul 11th, 2006

 

can anyone confirm me that in this question whether the total time is 8hr or its 8hr per day and which means the total time become 16 hr?

plz i need it before 15th july 2006 my interview is on 16th

Neetu Kumari

• Jul 11th, 2006

 

if we do in this way

average speed=2xy/x+y

speed=(2*30*40)/30+40

       =34.28m/hr

total time=8

distance=speed *time

           =34.28*8

           =274.28 miles    (its comming different)

and if we consider total time =16 hr

distance =34.28*16

            =548.57 miles

which one is correct m confused ,the way in which the question is written

plz reply soon

Chris

• Jun 19th, 2007

 

As fas as I can see, If the driver has an outward journey of 8 hours travelling at 40mph and a return journey of 8 hours at 30mph, the outward journey becomes irrelevant since he travels faster he will always be able to get there within 8 hours if he can get back in 8 hours at a slower speed.

The question does not state that all 8 hrs must be used therefore the maximum distance away from starting position he can picnic at is 30 * 8 = 240 miles.

Now if the question refurs to a picnic as his overnight stopping point then the maximum distance is 240 miles away, but any lesser distance is also acceptable.

If the picnic point refers to a place he can stop on both his journeys for lunch or for a break then a suitable point assuming he travels the maximum distance over the weekend would be the journey's midpoint which is 120 miles.  He may also choose to break for lunch at a certain time into his journey say 4 hours ( the halfway point on teh longer return journey) in which case he would picnic at 2 different locations these being ( 160miles on the outward journey and 120 miles on the return journey.

But there are numerous answers depending on how far he decides to travel.

Chris

• Jun 19th, 2007

 

Having thought more about this, the question specifies how far away can he picnic, the answer to this is 240 miles since he can choose to picnic at any point on his journey of maximum length 240 miles.

Benit Amala

 Profile Answers by Benit Amala Questions by Benit Amala

• Sep 16th, 2007

 

The answer is average speed =40m/hr.
for 8 hrs=40*8=320miles
during Sundays, avg. speed=30m/hr
for 8 hours=30*8=240miles
To and fro distance =240 miles
therefore 240/2=120miles

Niharika

• Mar 27th, 2018

 

The distance he could select depends upon the 30 m/hr avg speed.
avg speed = total distance/total time
so, let the distance be d.
total time is given in question i.e., 8hr.
30 = d+d/8
2d = 30*8
d = 120