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CAT Previous Year Tests Previous Year CAT tests for training you for the D-Day. Time yourself, race against the competition and win it! Online CAT 2008 - Question Paper & Solutions Online CAT ...
SOME IMPORTANT FORMULAE - from
Test's point of view
While a certain distance 'D' is covered, if A man changes his speed in the ratio X : Y, then the ratio of time taken becomes Y : X.
If an object travels a distance D from X to Y with Speed 'a' in time T1 and travels back from Y to X with of the usual speed 'a', then the change in time taken to travel the same distance can be calculated as:
; for n > m
; for m > n
IF two objects, say A and B, start at the same time in opposite directions from two different points (P and Q) and arrive at the opposite points in 'a' and 'b' hours respectively after having met.
Then the ratio of their speed is: