Asked by theprincess | 21st Feb, 2010, 10:45: AM

Expert Answer:

let the actual speed = x kmph

 increased speed=(x+40) kmph

when the speed is less, the time taken is more.

Using  speed= dist/ time

 we get


so, ATQ,

pl send only one question in one query mail.

 you can send the other questions as seperate mails.

Answered by  | 21st Feb, 2010, 07:54: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.