Can anyone help me with this problem?

Asked by Sneha Biswas on 2026-05-31 in CAT Prep

If a person travels at speed of 40km/hr & 60km/hr, he will reach office at 7pm & 2pm respectively. If he wants to reach office at 5pm, at what speed should he travel?

1 Answer

Varun · 2026-05-31 · 2 helpful

S=d/t;
Take 7pm(19hrs) and 2pm(14hrs) according to railway time… actually, this is best approach if qn have this “pm & am”!

40kmph=d/(19-x)
60=d/(14-x)
Equating both,
d= 40(19-x) = 60(14-x)
x=4; this is 4am

Now at 60kmph or 40kmph he takes 10hrs(4am to 2pm)and 15hrs(4am to 7pm) respectively.

Take any one time info and solve for d=600km

Now to reach at 5pm ie; 13hrs
S=600/13=46.154km/hr

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