A square is of side 1 km. A man travels first two sides with the 30 miles/hour and third side with 60 km/h. What is the speed at which the man has to travel the fourth side, if the overall average speed is 60 kmph?


Tech Mahindra by Karthik on 29-Mar-2014 17:07

A square is of side 1 km. A man travels first two sides with the 30 miles/hour and third side with 60 km/h. What is the speed at which the man has to travel the fourth side, if the overall average speed is 60 kmph?

Anjila on 8-Apr-2014 18:48
ans : 120
VISHNU on 16-Jul-2014 01:04
90
HIMANSHU on 17-Jul-2014 21:41
84

Hemapriya on 4-Aug-2014 18:18
84 kmph or 52.5 mph
sriram on 12-Aug-2014 21:45
84
ABIRAMI.K on 23-Aug-2014 20:24
60 km/hr
SOWMIA. on 27-Aug-2014 20:58
pls explain?
A on 28-Aug-2014 15:26
sam
please explain?
if you know.
Pritishree.S on 9-Sep-2014 10:10
pls gve answer
Lakshmi priya on 9-Sep-2014 11:50
which one is the correct answer

DINESH on 14-Sep-2014 11:15
pls explain priishree

Shubham Mahindru on 17-Sep-2015 07:34
120 average speed= total distance/total time
speed of covering 1st two sides=30miles/h ; 1mile=1.60km so 30*1.60=48km/h
total distance= 4km(4 sides)
total time =z=1/48+1/48+1/60+1/x where x is speed of the 4th side
Now, 60=4/z
by solving it x comes out 120km/h
Sakshi Yadav on 1-Oct-2015 10:33
120
HARSHIT KEDIA on 11-Oct-2015 21:26
84kmph or 52.5 mph
ADARSH PRAMOD KAPSE on 28-Oct-2015 12:46
120
V Sanjay on 19-Jan-2016 23:04
120
KONDA VENKATA SRIVATSAV on 29-Jan-2016 16:10
120
AAMIR EQUBAL on 1-Feb-2016 14:32
120
SAHIL BANKA on 9-Feb-2016 14:19
84...
Subrata Ghosh on 25-Feb-2016 00:16
120, (60*4)=240; but 30+30+60=120; so another 120 is needed to make 240. and for avg. 60 km speed
Jay Ram on 28-Feb-2016 21:35
120
RISHABH MAHESHWARI on 1-Mar-2016 13:24
120 as the time taken will also var with the speed 30 miles/h =48 km time taken for 1st side=1/48 for second side 1/48 for 3rd side1/60 for fourth side 1/x and then we know 60=4/s where s is the average time s=1/48+1/48+1/60+1/x on solving x=120
Divya on 12-Mar-2016 11:36
120
AVALAPATI UMA MAHESH on 14-Mar-2016 21:03
120
ACHAL MEHTA on 16-Mar-2016 19:17
120, (60*4)=240; but 30+30+60=120; so another 120 is needed to make 240
PUNITH KUMAR M on 29-Mar-2016 10:49
120
G BHARGAV on 12-Apr-2016 10:03
120
TAMOGHNA MAITRA on 12-Apr-2016 11:29
Approx 55.38kmph
PRITHIVIRAJ G on 18-Apr-2016 11:28
83.6 km/hr
Shri bharanitharan on 5-Jun-2016 13:06
120
Shri bharanitharan on 5-Jun-2016 13:06
120
Sumit Gandhi on 8-Jun-2016 08:13
120
vinoth.T on 2-Jul-2016 11:46
120
VINITHA R on 20-Jul-2016 18:29
120
BALA SUNDAR P on 25-Jul-2016 18:39
120
KEERTHANA R on 26-Jul-2016 18:33
120
sakthi on 1-Aug-2016 15:23
120
VENKATESH S on 23-Aug-2016 21:36
120
SRIAYYAPPAN S on 7-Sep-2016 12:14
83.4394 km/hr
KHADIR SAMEEM UPPUKAR on 7-Sep-2016 23:11
Basically 1mile=1.6093km In first two side it maintain 30 mile per hour which is 48.2803 kmph In 3rd side it take 60kmph If 48.2803+48.2803+60+X =240(Basically total derived from average of 60kmph) We get x=83.4394 THEREFORE THE FOURTH SIDE SPEED IS 83.4394KMPH
GOLLA ANIL KUMAR on 19-Oct-2016 16:29
84km/hr
Shabin on 5-Jan-2017 10:38
120