Shweta rides at the rate of 10 km per hour but stops for 10 minutes to take rest at the end of every

M4maths Previous Puzzles

11 Aug 2015 Time and Distance

Shweta rides at the rate of 10 km per hour but stops for 10 minutes to take rest at the end of every 15 km. How many hours will she take to cover 100 km?

OPtion

1) 9
2) 10
3) 11
4) 12
5) 25/2
6) 67/6
7) 34/3
8) 14
9) 15
10)None of these

Solution

Time taken to cover 100 km = 100/10 hr = 10 hr
During a journey of 100 km, she stops 6 times for
10 min each time, i.e. she stops for 1 hour
Therefore time taken = 11 hours

Option 3)

Correct Option: 3 Best Solution (18)

Megha Goel   9 years AGO

Time taken to cover 100 km= 100/10 hr
i.e. 10 hr
but she takes 10 min after every 15km hence it will take 1 hr for 6 time rest of 10 min.
hence 10+1 hr =11hr
option 3)

Like? Yes (4) | No   

Shiva Sharma   9 years AGO

she takes 10 min rest after 15 km
so there is 6 laps
and effectively she completes each lap in 100 min
and after 6th lap remaining distance is 10 km
which she completes in 60 min
so total time = 100*6 + 60 min
660 min = 11 hrs.

Like? Yes (3) | No   

umesh   9 years AGO

she is covering 15km in every 100m
so 90km in 600m i.e 10h
next 10km in 1h so total time is 10+1=11h

Like? Yes (2) | No   

Pritam Das   9 years AGO

she has 6 stops before completing her journey. thus 60 extra mins, thus 10+1=11 hrs

Like? Yes (2) | No   

AK Garg   9 years AGO

15*6 = 90
and take 60 mins rest for 90 km and 9 hour
then at last 10 km she takes 1 hour so
60 min + 1 hour + 9 hours = 11 hour

Like? Yes (1) | No   

sneha sri   9 years AGO

for 90 km she will take 10 hrs
for 15 km she will take 1 hr 40 mns
for last 10 km she will take 1 hr
so total 11 hrs

Like? Yes (1) | No   

Devendra Marghade   9 years AGO

Time taken for every 15 Km=Time to cover 15 Km.+10 min. stop=(15/10) +(1/6)=5/3 Hr.
So for 90 Km. time taken=6*5/3=10 Hr.
and for remaining 10 Km. time taken=1 Hr.
So total time taken=10+1=11 hours
Option 3)

Like? Yes (1) | No   

SOURADIP MISTRY   9 years AGO

she will take (9*10+6*1/6)=10 hr to cover 90 km.. another 1 hr for last 10 km. therefore total time taken= 11hrs ..
therefore the correct option is 3)

Like? Yes (1) | No   

Altaf Hussain   9 years AGO

15 km are covered in 1hr 40min(including the rest time)
To cover 100 km time taken is 11hrs

Like? Yes (1) | No   

Narendra Gopi   9 years AGO

with the rate 10km/hr it will take 10 hrs to complete the task
And the rest between every 15 km is 10min
so he takes rest 6 times in his journey so 60min=1hr
total journey is 10hr+1hr=11hrs

Like? Yes (1) | No   

prashant   9 years AGO

SHE TAKES 100MIN FOR 15KM SO SHE WILL TAKE 600MIN FOR 90KM
+60MIN FOR THE REST 10KM.
TOTAL 660MIN=11HOURS

Like? Yes (1) | No   

Juhi Gupta   9 years AGO

coz in 1hr she covers 10km.
in 3/2 hr she cover 15 km take 10 min break so 11 hr.

Like? Yes (1) | No   

KUMAR ROHIT   9 years AGO

100%6 i.e, 6 times she takes rest for 10min each that means 6*10=60min=1hr
and she takes 10hr for 100km with the speed of 10km/hr.
Result:10hr+1hr=11hr

Like? Yes (1) | No   

aditya   9 years AGO

1 1/2 hr --> 15 km
1hr stop
it takes 10 hr to reach and 10+1

Like? Yes (1) | No   

Rishabh Pandey   9 years AGO

time=distance/speed
t=100/10
=10 hr
but as she stops every 15 km so
100/15 =6.**
so that means she stops six times so 6*10 ie the 10 min she stops
60 min =1 hr
so total time 11 hr

Like? Yes (1) | No   

ramya   9 years AGO

Number of Breaks between 100 kms is 6 times
Therefore 6*10mins=1hrs
Without break shweta can reach the destination in 10hrs
Time=Distance/Speed
Time=100/10
Total time=Break time+Time
Total time=1+10=11hrs

Like? Yes (1) | No   

kondapuram tirumalreddy   9 years AGO

after every 90 minutes she will take 10 minutes rest
so she will take rest after every 15km
to cover 90km she will take 10 hours and extra 1 hour to cover remaining 10 km
finally she will take 11 hours to cover 100 km

Like? Yes (1) | No   

SURAJ KUMAR   9 years AGO

for first 15 km time =1.5+0.16666
=1.66666 hours
for 90 km time will be =6 x 1.6666
=10 hours
for next 10 km time will be =1 hour
overall to cover 100 km time taken will be =10+1 =11 hours

Like? Yes (1) | No (1)