A man travels at the speed of 5 kmph towards the office and comes back at the speed of 8 kmph. If it takes him 13 hours for going to and coming back from office. How far is office from the home?

Options
- 30 km
- 45 km
- 50 km
- 40 km

CORRECT ANSWER : 40 km

Discussion Board
time & distance

Average Speed (Sa) = (2S1S2) / (S1 + S2)

= 2* 5*8 / 5 + 8 =80 /13 km/hr
Distance = Speed * Time = 80 /13 km/hr * 13 hr = 80 km [total distance home to office and office to home]
so one way distance [home to office] = 80 / 2 =40 km


Aditya avinash sowale 06-17-2020 01:09 PM

Answer

Here t1+t2=T
t1=d/5. t2=d/8
13=d/5+d/8
D=40km



Rajini 09-5-2018 07:35 AM

Help!!!

Help me with the solution

Yeshi 07-24-2018 02:41 AM

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