premsagar

 Profile Answers by premsagar 

• Oct 4th, 2005

 

this is a +2 physics but it took a while for me to solve it.

here is the solution.

total time take is 6 hrs.

so lets assume x is the plane distance and y is the uphill then the equation is

x/4 + x/4 + y/3 +y/6 = 6

x/2 + y/2 = 6

x+y = 24.

premsagar

 Profile Answers by premsagar 

• Oct 4th, 2005

 

in a hurry I forgot to write it correctly

x+y is 12 but he went to and fro.

so it is 2(x+y) which is 24.

nandakumar

• Apr 5th, 2006

 

sir,how did u get the equation x/4+x/4+y/2+y/3=6what is the concept based on the above equation

goodsigh@yahoo.com

 Profile Answers by goodsigh@yahoo.com 

• Apr 8th, 2006

 

hi the speed values given in the ques involves both to and fro-- then y did u multiply by two... i dont understand --- plz can u explain

sangeetha`

• Sep 15th, 2006

 

Hi Friends,

I have understood in this way.. it might be wrong also...

The Person Starts His walk 3PM back to his destiny 9pm.

He walk for 6hrs.

4km/hr in flat 3km/hr and 6km/hr down the hills.

4+3+6(13km) in 3hrs. so he walked for 6hrs..

he walked for 26km in 6 hrs...

might may be correct or wrong.

regards

Sangeetha

pranavprakash

 Profile Answers by pranavprakash 

• Aug 22nd, 2008

 

Ans is 25
4+3+6=13 km (in 3 hours)
he reaches in similar speed (4 km) on level ground for another 3 hours (4+4+4=12)
so the ans is 13+12=25km.

ashish.gsits

 Profile Answers by ashish.gsits 

• Jun 3rd, 2010

 

Let distance of plane ground be x km and of hill be y km.

since total time= distance /speed.

now 6=x/4 + y/3 + x/4 + y/6

6=x/2 + y/2

x+y=12

(x+y) is the distance of one side...

therefore total distance =2(x+y)=2*12=24 km

Raghavan

• Sep 26th, 2018

 

How did you take the total time as 6 hrs?